Resolve "Failure in qa/specs/features/browser_ui/3_create/repository/user_views_commit_diff_patch_spec.rb"

What does this MR do?

Updates the test to perform a regex match instead of exact match, to optionally check for quotes in the name part of the email patch From: field.

Closes gitlab-org/quality/staging#69 (closed)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry for user-facing changes, or community contribution. Check the link for other scenarios.
• [-] Documentation created/updated or follow-up review issue created
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• [-] Separation of EE specific content