Fix caption of approvals in MR

What does this MR do?

Closes #26895 (closed): Rename the column Pending approvals to Approvals since the content of that column shows the given approvals rather than the pending ones.

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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