Adapt assets test, add .qm file coverage

Author: nirvn

tests/data/assets_project/project_de.qm

@@ -149,7 +149,9 @@ def test_assets(self):
         self.assertTrue(
             self.target_dir.joinpath("assets", "qfield_for_qgis.png").exists()
         )
-        self.assertTrue(self.target_dir.joinpath("project.qml").exists())
+        self.assertTrue(self.target_dir.joinpath("project_qfield.qml").exists())
+        self.assertTrue(self.target_dir.joinpath("project_qfield_fr.qm").exists())
+        self.assertTrue(self.target_dir.joinpath("project_qfield_de.qm").exists())
 
     def test_primary_keys_custom_property(self):
         shutil.copytree(