feat(core): join debuglink task before restarting Codec v1 event loop

[no changelog]

Author: romanz

core/src/trezor/wire/__init__.py

@@ -165,9 +165,11 @@ async def handle_session(iface: WireInterface) -> None:
                     if not do_not_restart:
                         # Wait for all active workflows to finish.
                         await workflow.join_all()
-                        # Let the session be restarted from `main`.
                         if __debug__:
-                            log.debug(__name__, "loop.clear()", iface=iface)
+                            import apps.debug
+
+                            await apps.debug.close_session()
+                        # Let the session be restarted from `main`.
                         loop.clear()
                         return  # pylint: disable=lost-exception