[Android] Modify Linux_android flutter_engine_group_performance to uninstall...

[Android] Modify Linux_android flutter_engine_group_performance to uninstall app before attempting to install (#127429)

Changes `Linux_android flutter_engine_group_performance` to uninstall the app that it uses for testing before attempting to install it again to ensure proper cleanup.

Attempt at fixing https://github.com/flutter/flutter/issues/127011.

dev/devicelab/bin/tasks/flutter_engine_group_performance.dart

@@ -20,6 +20,13 @@ Future<void> _withApkInstall(
   final DeviceDiscovery devices = DeviceDiscovery();
   final AndroidDevice device = await devices.workingDevice as AndroidDevice;
   await device.unlock();
+  try {
+    // Force proper cleanup before trying to install app. If uninstall fails,
+    // we log exception and proceed with running the test.
+    await device.adb(<String>['uninstall', bundleName]);
+  } on Exception catch (error) {
+    print('adb uninstall failed with exception: $error. Will proceed with test run.');
+  }
   await device.adb(<String>['install', '-r', apkPath]);
   try {
     await body(device);