Fix the unchecked conversion warning for searchPaths in PlayStoreDynamicFeatureManager (flutter#22654)

Also use the diamond operator throughout this class.

Author: jason-simmons

shell/platform/android/io/flutter/embedding/engine/dynamicfeatures/PlayStoreDynamicFeatureManager.java

@@ -165,7 +165,7 @@ public PlayStoreDynamicFeatureManager(@NonNull Context context, @Nullable Flutte
     splitInstallManager = SplitInstallManagerFactory.create(context);
     listener = new FeatureInstallStateUpdatedListener();
     splitInstallManager.registerListener(listener);
-    sessionIdToName = new SparseArray<String>();
+    sessionIdToName = new SparseArray<>();
     sessionIdToLoadingUnitId = new SparseIntArray();
   }
 
@@ -294,10 +294,10 @@ public void loadDartLibrary(int loadingUnitId, String moduleName) {
     // performant and robust.
 
     // Search directly in APKs first
-    List<String> apkPaths = new ArrayList<String>();
+    List<String> apkPaths = new ArrayList<>();
     // If not found in APKs, we check in extracted native libs for the lib directly.
-    List<String> soPaths = new ArrayList<String>();
-    Queue<File> searchFiles = new LinkedList<File>();
+    List<String> soPaths = new ArrayList<>();
+    Queue<File> searchFiles = new LinkedList<>();
     searchFiles.add(context.getFilesDir());
     while (!searchFiles.isEmpty()) {
       File file = searchFiles.remove();
@@ -317,7 +317,7 @@ public void loadDartLibrary(int loadingUnitId, String moduleName) {
       }
     }
 
-    List<String> searchPaths = new ArrayList();
+    List<String> searchPaths = new ArrayList<>();
     for (String path : apkPaths) {
       searchPaths.add(path + "!lib/" + abi + "/" + aotSharedLibraryName);
     }