Yet another omission, the flag was not properly set for deeply buried
'omp teams' as I stopped too early when walking up the stack.

Now fixed by commit r14-2826-g081e25d3cfd86c

* * *

This was found when 'repairing' the feature on the OG13
(devel/omp/gcc-13) branch for metadirectives, cf. the second attached
patch, applied after cherry-picking the mainline patch.

Tobias
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