Remove GraphQL check for feature flag and return null
What does this MR do and why?
When the epic_color_highlight
feature flag was added, the GraphQL changes were hidden behind the feature flag. That causes a number of queries to be duplicated in full except for a single field or two.
This changes the GraphQL to instead return null
if the feature flag is disabled so that we can use a single query file instead.
See: !89709 (comment 989593822)
See: https://docs.gitlab.com/ee/development/api_graphql_styleguide.html#toggle-the-value-of-a-field
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Related to #7641 (closed)