Fix: unhandled exception Gitlab::Git::InvalidPageToken
What does this MR do and why?
Contributes to #565706 (closed)
Problem
The application returns a 500 error when user provides an invalid
page_token on protected branches page.
Solution
Handle Gitlab::Git::InvalidPageToken exception and display a warning
message to the user.
References
GRPC::InvalidArgument: invalid page token error... (#565706 - closed)
Screenshots or screen recordings
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