Improve response parsing for OAuthRefreshException

- Handle missing, invalid, or non-dict JSON payloads
- Avoid crashes when refresh failures return unexpected bodies
- Add fallback type safe values for error, error_description

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: OpenCode (gpt-5.4) <noreply@openai.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: 4 people

trakt/errors.py

@@ -73,7 +73,24 @@ class OAuthRefreshException(OAuthException):
 
     def __init__(self, response=None):
         super().__init__(response)
-        self.data = self.response.json()
+        self.data = self._parse_response(self.response)
+
+    @staticmethod
+    def _parse_response(response):
+        if response is None:
+            data = {}
+        else:
+            try:
+                data = response.json()
+            except (ValueError, AttributeError):
+                data = {}
+            if not isinstance(data, dict):
+                data = {}
+
+        return {
+            "error": data.get("error", ""),
+            "error_description": data.get("error_description", ""),
+        }
 
     @property
     def error(self):