Do not replace text with semantics labels in selectable text widgets (#77859)

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

@@ -25,7 +25,7 @@ class _TextSpanEditingController extends TextEditingController {
   _TextSpanEditingController({required TextSpan textSpan}):
     assert(textSpan != null),
     _textSpan = textSpan,
-    super(text: textSpan.toPlainText());
+    super(text: textSpan.toPlainText(includeSemanticsLabels: false));
 
   final TextSpan _textSpan;
 

packages/flutter/lib/src/rendering/editable.dart

@@ -1835,7 +1835,7 @@ class RenderEditable extends RenderBox with RelayoutWhenSystemFontsChangeMixin {
   // Returns the obscured text when [obscureText] is true. See
   // [obscureText] and [obscuringCharacter].
   String get _plainText {
-    _cachedPlainText ??= _textPainter.text!.toPlainText();
+    _cachedPlainText ??= _textPainter.text!.toPlainText(includeSemanticsLabels: false);
     return _cachedPlainText!;
   }
 
@@ -2993,8 +2993,7 @@ class RenderEditable extends RenderBox with RelayoutWhenSystemFontsChangeMixin {
       return TextSelection(baseOffset: 0, extentOffset: _plainText.length);
     // If the word is a space, on iOS try to select the previous word instead.
     // On Android try to select the previous word instead only if the text is read only.
-    } else if (text?.toPlainText() != null
-        && _isWhitespace(text!.toPlainText().codeUnitAt(position.offset))
+    } else if (_isWhitespace(_plainText.codeUnitAt(position.offset))
         && position.offset > 0) {
       assert(defaultTargetPlatform != null);
       final TextRange? previousWord = _getPreviousWord(word.start);

packages/flutter/test/widgets/selectable_text_test.dart

@@ -2866,6 +2866,37 @@ void main() {
       expect(find.byType(CupertinoButton), findsNWidgets(1));
   }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));
 
+  testWidgets(
+    'double tap selects word with semantics label',
+    (WidgetTester tester) async {
+      await tester.pumpWidget(
+        const MaterialApp(
+          home: Material(
+            child: Center(
+              child: SelectableText.rich(
+                TextSpan(text: 'Atwater Peel Sherbrooke Bonaventure', semanticsLabel: ''),
+              ),
+            ),
+          ),
+        ),
+      );
+
+      final Offset selectableTextStart = tester.getTopLeft(find.byType(SelectableText));
+
+      await tester.tapAt(selectableTextStart + const Offset(220.0, 5.0));
+      await tester.pump(const Duration(milliseconds: 50));
+      await tester.tapAt(selectableTextStart + const Offset(220.0, 5.0));
+      await tester.pump();
+
+      final EditableText editableTextWidget = tester.widget(find.byType(EditableText).first);
+      final TextEditingController controller = editableTextWidget.controller;
+
+      expect(
+        controller.selection,
+        const TextSelection(baseOffset: 13, extentOffset: 23),
+      );
+  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));
+
   testWidgets(
     'tap after a double tap select is not affected (iOS)',
     (WidgetTester tester) async {