Use the shortcuts temporary solution only on web (#74768)

packages/flutter/lib/src/cupertino/text_field.dart

@@ -4,7 +4,7 @@
 
 import 'dart:ui' as ui show BoxHeightStyle, BoxWidthStyle;
 
-import 'package:flutter/foundation.dart' show defaultTargetPlatform;
+import 'package:flutter/foundation.dart' show defaultTargetPlatform, kIsWeb;
 import 'package:flutter/gestures.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
@@ -1201,32 +1201,37 @@ class _CupertinoTextFieldState extends State<CupertinoTextField> with Restoratio
       ),
     );
 
-    return Shortcuts(
-      shortcuts: scrollShortcutOverrides,
-      child: Semantics(
-        enabled: enabled,
-        onTap: !enabled || widget.readOnly ? null : () {
-          if (!controller.selection.isValid) {
-            controller.selection = TextSelection.collapsed(offset: controller.text.length);
-          }
-          _requestKeyboard();
-        },
-        child: IgnorePointer(
-          ignoring: !enabled,
-          child: Container(
-            decoration: effectiveDecoration,
-            child: _selectionGestureDetectorBuilder.buildGestureDetector(
-              behavior: HitTestBehavior.translucent,
-              child: Align(
-                alignment: Alignment(-1.0, _textAlignVertical.y),
-                widthFactor: 1.0,
-                heightFactor: 1.0,
-                child: _addTextDependentAttachments(paddedEditable, textStyle, placeholderStyle),
-              ),
+    final Widget child = Semantics(
+      enabled: enabled,
+      onTap: !enabled || widget.readOnly ? null : () {
+        if (!controller.selection.isValid) {
+          controller.selection = TextSelection.collapsed(offset: controller.text.length);
+        }
+        _requestKeyboard();
+      },
+      child: IgnorePointer(
+        ignoring: !enabled,
+        child: Container(
+          decoration: effectiveDecoration,
+          child: _selectionGestureDetectorBuilder.buildGestureDetector(
+            behavior: HitTestBehavior.translucent,
+            child: Align(
+              alignment: Alignment(-1.0, _textAlignVertical.y),
+              widthFactor: 1.0,
+              heightFactor: 1.0,
+              child: _addTextDependentAttachments(paddedEditable, textStyle, placeholderStyle),
             ),
           ),
         ),
       ),
     );
+
+    if (kIsWeb) {
+      return Shortcuts(
+        shortcuts: scrollShortcutOverrides,
+        child: child,
+      );
+    }
+    return child;
   }
 }

packages/flutter/lib/src/material/text_field.dart

@@ -1290,35 +1290,40 @@ class _TextFieldState extends State<TextField> with RestorationMixin implements
       semanticsMaxValueLength = null;
     }
 
-    return MouseRegion(
+    child = MouseRegion(
       cursor: effectiveMouseCursor,
       onEnter: (PointerEnterEvent event) => _handleHover(true),
       onExit: (PointerExitEvent event) => _handleHover(false),
-      child: Shortcuts(
-        shortcuts: scrollShortcutOverrides,
-        child: IgnorePointer(
-          ignoring: !_isEnabled,
-          child: AnimatedBuilder(
-            animation: controller, // changes the _currentLength
-            builder: (BuildContext context, Widget? child) {
-              return Semantics(
-                maxValueLength: semanticsMaxValueLength,
-                currentValueLength: _currentLength,
-                onTap: widget.readOnly ? null : () {
-                  if (!_effectiveController.selection.isValid)
-                    _effectiveController.selection = TextSelection.collapsed(offset: _effectiveController.text.length);
-                  _requestKeyboard();
-                },
-                child: child,
-              );
-            },
-            child: _selectionGestureDetectorBuilder.buildGestureDetector(
-              behavior: HitTestBehavior.translucent,
+      child: IgnorePointer(
+        ignoring: !_isEnabled,
+        child: AnimatedBuilder(
+          animation: controller, // changes the _currentLength
+          builder: (BuildContext context, Widget? child) {
+            return Semantics(
+              maxValueLength: semanticsMaxValueLength,
+              currentValueLength: _currentLength,
+              onTap: widget.readOnly ? null : () {
+                if (!_effectiveController.selection.isValid)
+                  _effectiveController.selection = TextSelection.collapsed(offset: _effectiveController.text.length);
+                _requestKeyboard();
+              },
               child: child,
-            ),
+            );
+          },
+          child: _selectionGestureDetectorBuilder.buildGestureDetector(
+            behavior: HitTestBehavior.translucent,
+            child: child,
           ),
         ),
       ),
     );
+
+    if (kIsWeb) {
+      return Shortcuts(
+        shortcuts: scrollShortcutOverrides,
+        child: child,
+      );
+    }
+    return child;
   }
 }

packages/flutter/lib/src/widgets/editable_text.dart

@@ -58,15 +58,13 @@ const int _kObscureShowLatestCharCursorTicks = 3;
 /// A map used to disable scrolling shortcuts in text fields.
 ///
 /// This is a temporary fix for: https://github.com/flutter/flutter/issues/74191
-final Map<LogicalKeySet, Intent> scrollShortcutOverrides = kIsWeb
-    ? <LogicalKeySet, Intent>{
-        LogicalKeySet(LogicalKeyboardKey.space): DoNothingAndStopPropagationIntent(),
-        LogicalKeySet(LogicalKeyboardKey.arrowUp): DoNothingAndStopPropagationIntent(),
-        LogicalKeySet(LogicalKeyboardKey.arrowDown): DoNothingAndStopPropagationIntent(),
-        LogicalKeySet(LogicalKeyboardKey.arrowLeft): DoNothingAndStopPropagationIntent(),
-        LogicalKeySet(LogicalKeyboardKey.arrowRight): DoNothingAndStopPropagationIntent(),
-      }
-    : <LogicalKeySet, Intent>{};
+final Map<LogicalKeySet, Intent> scrollShortcutOverrides = <LogicalKeySet, Intent>{
+  LogicalKeySet(LogicalKeyboardKey.space): DoNothingAndStopPropagationIntent(),
+  LogicalKeySet(LogicalKeyboardKey.arrowUp): DoNothingAndStopPropagationIntent(),
+  LogicalKeySet(LogicalKeyboardKey.arrowDown): DoNothingAndStopPropagationIntent(),
+  LogicalKeySet(LogicalKeyboardKey.arrowLeft): DoNothingAndStopPropagationIntent(),
+  LogicalKeySet(LogicalKeyboardKey.arrowRight): DoNothingAndStopPropagationIntent(),
+};
 
 /// A controller for an editable text field.
 ///