fix. typos (#137178)

## Description

This PR fixes typos in 
- `checkbox.dart`
- `chip_test.dart`
- `color_scheme.dart`
- `color_scheme_test.dart`
- `curves.dart`

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

@@ -338,7 +338,7 @@ class _CheckboxPainter extends ToggleablePainter {
     final Path path = Path();
     // The ratios for the offsets below were found from looking at the checkbox
     // examples on in the HIG docs. The distance from the needed point to the
-    // edge was measured, then devided by the total width.
+    // edge was measured, then divided by the total width.
     const Offset start = Offset(CupertinoCheckbox.width * 0.25, CupertinoCheckbox.width * 0.52);
     const Offset mid = Offset(CupertinoCheckbox.width * 0.46, CupertinoCheckbox.width * 0.75);
     const Offset end = Offset(CupertinoCheckbox.width * 0.72, CupertinoCheckbox.width * 0.29);

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

@@ -998,7 +998,7 @@ class ColorScheme with Diagnosticable {
   ///
   /// Material Color Utilities extracts the dominant color from the
   /// supplied [ImageProvider]. Using this color, a [ColorScheme] is generated
-  /// with harmnonious colors that meet contrast requirements for accessibility.
+  /// with harmonious colors that meet contrast requirements for accessibility.
   ///
   /// If any of the optional color parameters are non-null, they will be
   /// used in place of the generated colors for that field in the resulting
@@ -1026,7 +1026,7 @@ class ColorScheme with Diagnosticable {
   ///  * <https://m3.material.io/styles/color/the-color-system/color-roles>, the
   ///    Material 3 Color system specification.
   ///  * <https://pub.dev/packages/material_color_utilities>, the package
-  ///    used to algorightmically determine the dominant color and to generate
+  ///    used to algorithmically determine the dominant color and to generate
   ///    the [ColorScheme].
   static Future<ColorScheme> fromImageProvider({
     required ImageProvider provider,

packages/flutter/test/material/chip_test.dart

@@ -1778,7 +1778,7 @@ void main() {
               labelStyle: TextStyle(height: 4), // inherit: true
             ),
           ),
-          child: const Chip(label: Text('Label')), // labeStyle: null
+          child: const Chip(label: Text('Label')), // labelStyle: null
         ),
       );
     }

packages/flutter/test/material/color_scheme_test.dart

@@ -430,7 +430,7 @@ void main() {
     }, skip: isBrowser, // [intended] uses dart:isolate and io.
   );
 
-  test('fromImageProvider() propogates TimeoutException when image cannot be rendered', () async {
+  test('fromImageProvider() propagates TimeoutException when image cannot be rendered', () async {
     final Uint8List blueSquareBytes = Uint8List.fromList(kBlueSquarePng);
 
     // Corrupt the image's bytelist so it cannot be read.