Update feature_category in spec/features

What does this MR do and why?

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Related #381801 (closed) This MR updates feature_category for RSpec files for

• https://gitlab.com/gitlab-org/gitlab/-/tree/master/spec/features/ics
• https://gitlab.com/gitlab-org/gitlab/-/tree/master/spec/features/ide
• https://gitlab.com/gitlab-org/gitlab/-/tree/master/spec/features/import
• https://gitlab.com/gitlab-org/gitlab/-/tree/master/spec/features/incidents

This information is added to flaky tests reports and from here we can automatically quarantine tests and create issues for the related

I'm using this snippet to identify the feature categories. And manually looking into the related development docs or looking for commits and MRs for the feature_category.

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