Modify create_personal_snippet E2E to cover code snippets
Snippets usually contain code, however most of our tests work with plain text snippets. We need to modify one of end-to-ends (preferably create_personal_snippet_spec.rb
) to create a snippet with Ruby code and check that syntax highlighting is present.
Identified as a test gap in gitlab-org/gitlab!35383 (comment 370483602)