Resolve "Raw HTML is being shown on the MR page from Performance widget"

What does this MR do?

Fixes raw html being shown on the metrics usage mr widget component

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Review
  • Has been reviewed by Frontend
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together
• Internationalization required/considered

What are the relevant issue numbers?

Closes #45353 (closed)