Fix method_channel_video_player_test.

Add rotationCorrection for equality check.
Add another VideoEvent to test when rotationCorrection is set.

Author: KyleFin

packages/video_player/video_player_platform_interface/test/method_channel_video_player_test.dart

@@ -255,6 +255,20 @@ void main() {
                     }),
                     (ByteData? data) {});
 
+            await _ambiguate(ServicesBinding.instance)
+                ?.defaultBinaryMessenger
+                .handlePlatformMessage(
+                "flutter.io/videoPlayer/videoEvents123",
+                const StandardMethodCodec()
+                    .encodeSuccessEnvelope(<String, dynamic>{
+                  'event': 'initialized',
+                  'duration': 98765,
+                  'width': 1920,
+                  'height': 1080,
+                  'rotationCorrection': 3.14,
+                }),
+                    (ByteData? data) {});
+
             await _ambiguate(ServicesBinding.instance)
                 ?.defaultBinaryMessenger
                 .handlePlatformMessage(
@@ -314,6 +328,13 @@ void main() {
               eventType: VideoEventType.initialized,
               duration: const Duration(milliseconds: 98765),
               size: const Size(1920, 1080),
+              rotationCorrection: 0.0,
+            ),
+            VideoEvent(
+              eventType: VideoEventType.initialized,
+              duration: const Duration(milliseconds: 98765),
+              size: const Size(1920, 1080),
+              rotationCorrection: 3.14,
             ),
             VideoEvent(eventType: VideoEventType.completed),
             VideoEvent(