ui: switch spinner and text window back to standalone process (#35470)

switch spinner and text window back to standalone process

system/manager/manager.py

@@ -9,6 +9,7 @@ from cereal import log
 import cereal.messaging as messaging
 import openpilot.system.sentry as sentry
 from openpilot.common.params import Params, ParamKeyType
+from openpilot.common.text_window import TextWindow
 from openpilot.system.hardware import HARDWARE
 from openpilot.system.manager.helpers import unblock_stdout, write_onroad_params, save_bootlog
 from openpilot.system.manager.process import ensure_running
@@ -202,8 +203,6 @@ def main() -> None:
 
 
 if __name__ == "__main__":
-  from openpilot.system.ui.text import TextWindow
-
   unblock_stdout()
 
   try: