fix: Move temporary files outside of the cache directory (#2193)

Co-authored-by: Pun Butrach <pun.butrach@gmail.com>

android/app/src/main/kotlin/app/revanced/manager/flutter/MainActivity.kt

@@ -364,6 +364,9 @@ class MainActivity : FlutterActivity() {
                         "An error occurred:\n$stack"
                     )
                 }
+            } finally {
+                inFile.delete()
+                tmpDir.deleteRecursively()
             }
 
             handler.post { result.success(null) }