fix: loadDataWithBaseURL加载缓存HTML (file://权限不足)

packages/client-android/android/app/src/main/java/dev/yuzu/gca/MainActivity.kt

@@ -26,8 +26,9 @@ class MainActivity : AppCompatActivity() {
             addJavascriptInterface(Bridge(this@MainActivity), "Android")
 
             if (cacheFile.exists()) {
-                loadUrl("file://" + cacheFile.absolutePath)
-                Log.i(TAG, "Loaded cached hot-update HTML (${cacheFile.length()}B)")
+                val html = cacheFile.readText()
+                loadDataWithBaseURL("https://gca.app/", html, "text/html", "UTF-8", null)
+                Log.i(TAG, "Loaded cached HTML (${cacheFile.length()}B)")
             } else {
                 loadUrl("file:///android_asset/index.html")
                 Log.i(TAG, "Loaded embedded index.html")