Ensure the correct file name is used for SharedPreferences (#513)

app/src/main/java/com/x8bit/bitwarden/data/platform/datasource/di/PreferenceModule.kt

@@ -20,5 +20,9 @@ object PreferenceModule {
     @Singleton
     fun provideDefaultSharedPreferences(
         application: Application,
-    ): SharedPreferences = application.getSharedPreferences(null, Context.MODE_PRIVATE)
+    ): SharedPreferences =
+        application.getSharedPreferences(
+            "${application.packageName}_preferences",
+            Context.MODE_PRIVATE,
+        )
 }