[url_launcher] Add explicit imports of UIKit (flutter#6208)

When trying to compile url_launcher_ios as an independent library (for instance, when using Bazel/Blaze) compilation fails due to a missing UIKit import. Presumably this is not a problem when using the Flutter build tools because UIKit is included implicitly.

Author: ChristianEdwardPadilla

packages/url_launcher/url_launcher_ios/CHANGELOG.md

@@ -1,5 +1,6 @@
-## NEXT
+## 6.2.5
 
+* Adds explicit imports for UIKit.
 * Updates minimum iOS version to 12.0 and minimum Flutter version to 3.16.6.
 
 ## 6.2.4

packages/url_launcher/url_launcher_ios/ios/Classes/Launcher.swift

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import UIKit
+
 /// Protocol for UIApplication methods relating to launching URLs.
 ///
 /// This protocol exists to allow injecting an alternate implementation for testing.

packages/url_launcher/url_launcher_ios/ios/Classes/URLLauncherPlugin.swift

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 import Flutter
+import UIKit
 
 public final class URLLauncherPlugin: NSObject, FlutterPlugin, UrlLauncherApi {
 

packages/url_launcher/url_launcher_ios/pubspec.yaml

@@ -2,7 +2,7 @@ name: url_launcher_ios
 description: iOS implementation of the url_launcher plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/url_launcher/url_launcher_ios
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+url_launcher%22
-version: 6.2.4
+version: 6.2.5
 
 environment:
   sdk: ^3.2.3