The whatsapp reply_prefix bridging referenced config.platforms before
the config object was constructed, making it a silent NameError caught
by except Exception: pass.
Fix: fold reply_prefix into the per-platform bridging loop (introduced
in #1919) which correctly writes to gw_data dict pre-construction.
Removes the broken standalone whatsapp bridging block.
Co-authored-by: Test <test@test.com>