DirectoryInitialization.kt: Switch to getFilesDir for internalUserPath (#1646)

* DirectoryInitialization.kt: Switch to getFilesDir for internalUserPath

Was previously getExternalFilesDir

filesDir is used here, which is just recommended shorthand for getFilesDir

* DirectoryInitialization.kt: Updated license header

src/android/app/src/main/java/org/citra/citra_emu/utils/DirectoryInitialization.kt

@@ -1,4 +1,4 @@
-// Copyright 2023 Citra Emulator Project
+// Copyright Citra Emulator Project / Azahar Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
@@ -28,8 +28,8 @@ object DirectoryInitialization {
     @Volatile
     private var directoryState: DirectoryInitializationState? = null
     var userPath: String? = null
-    val internalUserPath
-        get() = CitraApplication.appContext.getExternalFilesDir(null)!!.canonicalPath
+    val internalUserPath: String
+        get() = CitraApplication.appContext.filesDir.canonicalPath
     private val isCitraDirectoryInitializationRunning = AtomicBoolean(false)
 
     val context: Context get() = CitraApplication.appContext