[auth][search] fix focus on search icon tap (#4249)

## Description

Fixes #[3153](https://github.com/ente-io/ente/discussions/3153) and
#[3272](https://github.com/ente-io/ente/discussions/3272)

## Tests

auth/lib/ui/home_page.dart

@@ -362,10 +362,7 @@ class _HomePageState extends State<HomePage> {
                       _searchText = _textController.text;
 
                       // Request focus on the search box
-                      // For Windows and macOS only for now. This if statement can be removed if other platforms has been tested.
-                      if (Platform.isWindows || Platform.isMacOS) {
-                        searchBoxFocusNode.requestFocus();
-                      }
+                      searchBoxFocusNode.requestFocus();
                     }
                     _applyFilteringAndRefresh();
                   },

auth/macos/Podfile.lock

@@ -4,8 +4,6 @@ PODS:
   - connectivity_plus (0.0.1):
     - Flutter
     - FlutterMacOS
-  - desktop_webview_window (0.0.1):
-    - FlutterMacOS
   - device_info_plus (0.0.1):
     - FlutterMacOS
   - file_saver (0.0.1):
@@ -74,7 +72,6 @@ PODS:
 DEPENDENCIES:
   - app_links (from `Flutter/ephemeral/.symlinks/plugins/app_links/macos`)
   - connectivity_plus (from `Flutter/ephemeral/.symlinks/plugins/connectivity_plus/darwin`)
-  - desktop_webview_window (from `Flutter/ephemeral/.symlinks/plugins/desktop_webview_window/macos`)
   - device_info_plus (from `Flutter/ephemeral/.symlinks/plugins/device_info_plus/macos`)
   - file_saver (from `Flutter/ephemeral/.symlinks/plugins/file_saver/macos`)
   - flutter_inappwebview_macos (from `Flutter/ephemeral/.symlinks/plugins/flutter_inappwebview_macos/macos`)
@@ -107,8 +104,6 @@ EXTERNAL SOURCES:
     :path: Flutter/ephemeral/.symlinks/plugins/app_links/macos
   connectivity_plus:
     :path: Flutter/ephemeral/.symlinks/plugins/connectivity_plus/darwin
-  desktop_webview_window:
-    :path: Flutter/ephemeral/.symlinks/plugins/desktop_webview_window/macos
   device_info_plus:
     :path: Flutter/ephemeral/.symlinks/plugins/device_info_plus/macos
   file_saver:
@@ -153,7 +148,6 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   app_links: 10e0a0ab602ffaf34d142cd4862f29d34b303b2a
   connectivity_plus: ddd7f30999e1faaef5967c23d5b6d503d10434db
-  desktop_webview_window: 89bb3d691f4c80314a10be312f4cd35db93a9d5a
   device_info_plus: 5401765fde0b8d062a2f8eb65510fb17e77cf07f
   file_saver: 44e6fbf666677faf097302460e214e977fdd977b
   flutter_inappwebview_macos: bdf207b8f4ebd58e86ae06cd96b147de99a67c9b