mentor.getCandidates and mentor.getMentorPool both filtered on
status='ACTIVE', which excluded every seeded mentor (status=NONE)
and any INVITED mentor. Production scenario: PR 4's Manual Picker and
PR 5's pool counts both rendered empty against real data.
Filter changed to status != SUSPENDED — admins want to see all mentors
they manage (including INVITED + NONE), but not suspended ones.
Found via Playwright smoke of PR 5: pool count read 0 against 4 seeded
mentors with roles[]=['MENTOR'], status='NONE'.
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