Fix unified components inline view

What does this MR do?

Fixes the display of unified inline diffs.

Screenshots (strongly suggested)

Old and busted

The new hotness

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Related to: #236075 (closed)