Set token_expiry_time upon context initialization

Author: keurcien

src/mcp/client/auth/oauth2.py

@@ -467,6 +467,10 @@ async def _initialize(self) -> None:  # pragma: no cover
         """Load stored tokens and client info."""
         self.context.current_tokens = await self.context.storage.get_tokens()
         self.context.client_info = await self.context.storage.get_client_info()
+
+        if self.context.current_tokens and self.context.current_tokens.expires_in:
+            self.context.update_token_expiry(self.context.current_tokens)
+
         self._initialized = True
 
     def _add_auth_header(self, request: httpx.Request) -> None: