Fix file permissions for Android 14 (#201)

Dex file should not be writable, otherwise it causes
java.lang.SecurityException.

Here is the related [soucre
code](https://cs.android.com/android/platform/superproject/+/master:art/runtime/native/dalvik_system_DexFile.cc;l=381)
of Android 14.

---------

Co-authored-by: LoveSy <shana@zju.edu.cn>

patch-loader/src/main/java/org/lsposed/lspatch/loader/LSPApplication.java

@@ -137,6 +137,7 @@ public class LSPApplication {
                     Files.copy(is, cacheApkPath);
                 }
             }
+            cacheApkPath.toFile().setWritable(false);
 
             var mPackages = (Map<?, ?>) XposedHelpers.getObjectField(activityThread, "mPackages");
             mPackages.remove(appInfo.packageName);