fix: Delete cached APK only after successful patch (#2331)

lib/services/patcher_api.dart

@@ -175,13 +175,6 @@ class PatcherAPI {
     final File inApkFile = File('${workDir.path}/in.apk');
     await File(apkFilePath).copy(inApkFile.path);
 
-    if (isFromStorage) {
-      // The selected apk was copied to cacheDir by the file picker, so it's not needed anymore.
-      // rename() can't be used here, as Android system also counts the size of files moved out from cacheDir
-      // as part of the app's cache size.
-      File(apkFilePath).delete();
-    }
-
     outFile = File('${workDir.path}/out.apk');
 
     final Directory tmpDir =

lib/ui/views/installer/installer_viewmodel.dart

@@ -1,4 +1,6 @@
 // ignore_for_file: use_build_context_synchronously
+import 'dart:io';
+
 import 'package:device_apps/device_apps.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
@@ -566,6 +568,10 @@ class InstallerViewModel extends BaseViewModel {
   Future<void> cleanPatcher() async {
     try {
       _patcherAPI.cleanPatcher();
+      if (_app.isFromStorage) {
+        // The selected apk was copied to cacheDir by the file picker, so it's not needed anymore.
+        File(_app.apkFilePath).delete();
+      }
       locator<PatcherViewModel>().selectedApp = null;
       locator<PatcherViewModel>().selectedPatches.clear();
       locator<PatcherViewModel>().notifyListeners();