Fix destination path handling in RootProviderProxy

- Update `FileUtils.copyToIconifyDir` to use only the filename from `resultPath` instead of the full path.

Author: Mahmud0808

app/src/main/java/com/drdisagree/iconify/services/providers/RootProviderProxy.kt

@@ -74,7 +74,7 @@ class RootProviderProxy : Service() {
 
                                 val isSuccess = FileUtils.copyToIconifyDir(
                                     tempFile,
-                                    resultPath
+                                    File(resultPath).name
                                 )
 
                                 tempFile.delete()