Do not report a CI failure if add-version-label-issue is red

Summary:
The `add-version-label-issue` CI is failing if the version label is not found.
That is happening for previous versions of RN where the Labels are missing.

Changelog:
[Internal] [Changed] - Do not report a CI failure if add-version-label-issue is red

Reviewed By: sammy-SC

Differential Revision: D32723953

fbshipit-source-id: 878d2632b3a78311a01363b8f8a9181ae543a253