do not prematurely import app module if providing app_module_import

Author: adhami3310

reflex/config.py

@@ -988,8 +988,8 @@ def module(self) -> str:
         Returns:
             The module name.
         """
-        if self.app_module is not None:
-            return self.app_module.__name__
+        if self.app_module_import is not None:
+            return self.app_module_import
         return ".".join([self.app_name, self.app_name])
 
     def update_from_env(self) -> dict[str, Any]:

reflex/utils/exec.py

@@ -301,8 +301,12 @@ def get_reload_paths() -> Sequence[Path]:
     """
     config = get_config()
     reload_paths = [Path(config.app_name).parent]
-    if config.app_module is not None and config.app_module.__file__:
-        module_path = Path(config.app_module.__file__).resolve().parent
+    if (
+        config.app_module_import is not None
+        and (spec := importlib.util.find_spec(config.app_module_import)) is not None
+        and spec.origin
+    ):
+        module_path = Path(spec.origin).resolve().parent
 
         while module_path.parent.name and any(
             sibling_file.name == "__init__.py"