Fix. typos (#137479)

## Description

This PR fixes typos in 
- `editable_text_show_on_screen_test.dart`
- `form_test.dart`
- `framework.dart`

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

@@ -872,7 +872,7 @@ const String _flutterWidgetsLibrary = 'package:flutter/widgets.dart';
 ///    objects should override [didUpdateWidget] to respond to changes in their
 ///    associated widget (e.g., to start implicit animations). The framework
 ///    always calls [build] after calling [didUpdateWidget], which means any
-///    calls to [setState] in [didUpdateWidget] are redundant. (See alse the
+///    calls to [setState] in [didUpdateWidget] are redundant. (See also the
 ///    discussion at [Element.rebuild].)
 ///  * During development, if a hot reload occurs (whether initiated from the
 ///    command line `flutter` tool by pressing `r`, or from an IDE), the

packages/flutter/test/widgets/editable_text_show_on_screen_test.dart

@@ -366,7 +366,7 @@ void main() {
     expect(render.size.height, greaterThan(500.0));
     expect(scrollController.offset, 0.0);
 
-    // Change selection to non-collapased so that cursor isn't shown
+    // Change selection to non-collapsed so that cursor isn't shown
     // and the location requires a bit of scroll.
     tester.testTextInput.updateEditingValue(TextEditingValue(
       text: text,

packages/flutter/test/widgets/form_test.dart

@@ -78,7 +78,7 @@ void main() {
 
     Future<void> checkText(String testValue) async {
       await tester.enterText(find.byType(TextField), testValue);
-      // pump'ing is unnecessary because callback happens regardless of frames
+      // Pumping is unnecessary because callback happens regardless of frames.
       expect(fieldValue, equals(testValue));
     }