Display parsing errors in test reports MR widget

What does this MR do?

For #263457 (closed)

Displays the head and base report parsing errors from the suite_errors object (added by !54980 (merged)) in the affected suite section in the test reports MR widget

Screenshots

with a head report parsing error:

with both head report and base report parsing errors:

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

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done