Add aria label to status and action icons

What does this MR do?

With the changes in gitlab-ui!1860 (merged), icons are no longer showing without aria-label attributes, under the idea that most SVGs are decorative. This adds the labels for the very non-decorative Ci Status and Action icons.

Screenshots (strongly suggested)

status icon	action icon

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Code review guidelines
• Merge request performance guidelines
• Style guides

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.