nit(opsgenie): add config access requirement to error text (#74111)

Users who set up their Opsgenie API keys via the Opsgenie API were
experiencing problems due to a lack of configuration access. However,
the error message that they encountered did not indicate that this was
the problem, so this PR makes the issue more clear.

Author: mifu67

src/sentry/integrations/opsgenie/actions/form.py

@@ -113,7 +113,7 @@ def _validate_team(self, team_id: str | None, integration_id: int | None) -> Non
             raise forms.ValidationError(
                 _(
                     'The provided API key is invalid. Please make sure that the Opsgenie API \
-                  key is an integration key of type "Sentry".'
+                  key is an integration key of type "Sentry" that has configuration access.'
                 ),
                 code="invalid_key",
                 params=params,