Update file_selector_platform_interface to 2.2.0 version

Author: VanesaOshiro

packages/file_selector/file_selector_android/android/src/test/java/io/flutter/plugins/file_selector/FileSelectorDelegateTest.java

@@ -60,8 +60,7 @@ public void onActivityResult_WhenGetDirectoryPathCanceled_FinishesWithNull() {
   }
 
   @Test
-  public void
-      onActivityResult_GetDirectoryPathReturnsSuccessfully() {
+  public void onActivityResult_GetDirectoryPathReturnsSuccessfully() {
     MethodCall call = buildMethodCall(METHOD_GET_DIRECTORY_PATH);
     FileSelectorDelegate delegate = createDelegateWithPendingResultAndMethodCall(call);
     delegate.onActivityResult(

packages/file_selector/file_selector_android/example/lib/open_image_page.dart

@@ -15,7 +15,7 @@ class OpenImagePage extends StatelessWidget {
   const OpenImagePage({Key? key}) : super(key: key);
 
   Future<void> _openImageFile(BuildContext context) async {
-    final XTypeGroup typeGroup = XTypeGroup(
+    const XTypeGroup typeGroup = XTypeGroup(
       label: 'images',
       extensions: <String>['jpg', 'png'],
     );

packages/file_selector/file_selector_android/example/lib/open_multiple_images_page.dart

@@ -15,11 +15,11 @@ class OpenMultipleImagesPage extends StatelessWidget {
   const OpenMultipleImagesPage({Key? key}) : super(key: key);
 
   Future<void> _openImageFile(BuildContext context) async {
-    final XTypeGroup jpgsTypeGroup = XTypeGroup(
+    const XTypeGroup jpgsTypeGroup = XTypeGroup(
       label: 'JPEGs',
       extensions: <String>['jpg', 'jpeg'],
     );
-    final XTypeGroup pngTypeGroup = XTypeGroup(
+    const XTypeGroup pngTypeGroup = XTypeGroup(
       label: 'PNGs',
       extensions: <String>['png'],
     );

packages/file_selector/file_selector_android/example/lib/open_text_page.dart

@@ -12,7 +12,7 @@ class OpenTextPage extends StatelessWidget {
   const OpenTextPage({Key? key}) : super(key: key);
 
   Future<void> _openTextFile(BuildContext context) async {
-    final XTypeGroup typeGroup = XTypeGroup(
+    const XTypeGroup typeGroup = XTypeGroup(
       label: 'text',
       extensions: <String>['txt', 'json'],
     );

packages/file_selector/file_selector_android/pubspec.yaml

@@ -20,7 +20,7 @@ flutter:
         pluginClass: FileSelectorPlugin
 
 dependencies:
-  file_selector_platform_interface: ^2.1.0
+  file_selector_platform_interface: ^2.2.0
   flutter:
     sdk: flutter