default clause replaced by otherwise clause for metadirective in OpenMP 5.2 (#128640)
This PR replaces the `default` clause with the `otherwise` clause for
the `metadirective` in OpenMP. The `otherwise` clause serves as a
fallback condition when no directive from the when clauses is selected.
In the `when` clause, context selectors define traits evaluated to
determine the directive to be applied.
The previous merge was reverted due to a failing test case, which has
now been resolved.
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Co-authored-by: urvi-rav <urvi.rav@hpe.com>