refactor(ChangeDeviceInfoUtil, MainActivity): enhance package processing null-check, cleanup unused variables

- Introduced null-checks for `packageInfo` in `ChangeDeviceInfoUtil` package processing to improve error handling.
- Removed redundant `scriptResult` assignment in `MainActivity` for cleaner execution logic.
- Updated APK and baseline profile files for release configuration.

app/src/main/java/com/example/studyapp/MainActivity.java

@@ -250,7 +250,6 @@ public class MainActivity extends AppCompatActivity {
             }
             executeSingleLogic();
             TaskUtil.execSaveTask(this, androidId,taskId);
-            scriptResult = "bin.mt.plus";
             if (scriptResult != null && !TextUtils.isEmpty(scriptResult)) {
               infoUpload(this, androidId, scriptResult);
             }

app/src/main/java/com/example/studyapp/device/ChangeDeviceInfoUtil.java

@@ -96,6 +96,7 @@ public class ChangeDeviceInfoUtil {
         Log.d("TaskUtil", "Package info retrieved: " + packageInfo);
 
         // 遍历包信息并执行逻辑
+        if (packageInfo != null) {
           for (String packAgeName : packageInfo.keySet()) {
             Log.d("TaskUtil", "Processing package: " + packAgeName);
             if (isAppInstalled(packAgeName)) {
@@ -122,6 +123,7 @@ public class ChangeDeviceInfoUtil {
               Log.w("TaskUtil", "Package not installed: " + packAgeName);
             }
           }
+        }
       } catch (IOException | JSONException e) {
         Log.e("TaskUtil", "Error occurred during initialization", e);
       } catch (Exception e) {