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';
@@ -1201,9 +1201,7 @@ class _CupertinoTextFieldState extends State<CupertinoTextField> with Restoratio
       ),
     );
 
-    return Shortcuts(
-      shortcuts: scrollShortcutOverrides,
-      child: Semantics(
+    final Widget child = Semantics(
       enabled: enabled,
       onTap: !enabled || widget.readOnly ? null : () {
         if (!controller.selection.isValid) {
@@ -1226,7 +1224,14 @@ class _CupertinoTextFieldState extends State<CupertinoTextField> with Restoratio
           ),
         ),
       ),
-      ),
     );
+
+    if (kIsWeb) {
+      return Shortcuts(
+        shortcuts: scrollShortcutOverrides,
+        child: child,
+      );
+    }
+    return child;
   }
 }

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

@@ -1290,12 +1290,10 @@ 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(
@@ -1318,7 +1316,14 @@ class _TextFieldState extends State<TextField> with RestorationMixin implements
           ),
         ),
       ),
-      ),
     );
+
+    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>{
+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(),
-      }
-    : <LogicalKeySet, Intent>{};
+};
 
 /// A controller for an editable text field.
 ///