style: remove redundant retry loop variables in web client

Agent-Logs-Url: https://github.com/eclipse-csi/otterdog/sessions/305839ba-b0c3-4931-b989-8b5354ec0cc8

Co-authored-by: mbarbero <452625+mbarbero@users.noreply.github.com>

Author: Copilot

otterdog/providers/github/web.py

@@ -546,10 +546,9 @@ async def _goto(self, page: Page, url: str) -> None:
 
         Also, save a screenshot if trace logging is enabled.
         """
-        status = None
         max_retries = self._REPO_DEFAULTS_404_RETRIES
         max_attempts = max_retries + 1
-        for retry_idx in range(max_retries + 1):
+        for retry_idx in range(max_attempts):
             attempt = retry_idx + 1
             _logger.trace("loading page '%s'", url)
             response = await page.goto(url)