[Chore/Refactor] Improve type annotations in models module (#25281)

Signed-off-by: -LAN- <laipz8200@outlook.com>
Co-authored-by: crazywoola <100913391+crazywoola@users.noreply.github.com>

api/controllers/console/explore/parameter.py

@@ -43,6 +43,8 @@ class ExploreAppMetaApi(InstalledAppResource):
     def get(self, installed_app: InstalledApp):
         """Get app meta"""
         app_model = installed_app.app
+        if not app_model:
+            raise ValueError("App not found")
         return AppService().get_app_meta(app_model)