In several cases the flags entries in ompt_frame_t are not initialized.
According to @jdelsign the address provided as reenter and exit address
is the canonical frame address (cfa) rather than a "framepointer". This
patch makes sure that the flags entry is always initialized and changes
the value from ompt_frame_framepointer to ompt_frame_cfa.
The assertion in the tests makes sure that the flags are always set,
when a tool (callback.h in this case) looks at the value.
Fixes#89058
12a9e2adc3