run_tests.be and button_stability_tests.be stop with assert_failed right
after "Matter epoch conversion for UTC and local time: OK" on development.
Three test-only mistakes, each hiding the next:
- run_tests.be checked the RSSI item's stored TLV type before encoding.
"Clamp RSSI" (#25126) stores signed values as I4; the encoded bytes are
still the 1-byte 00C3, which the next assert checks. Check the value only.
- TestGarageDevice (run_tests.be) lacks disable_bridge_mode, which
Matter_Plugin_Device.init() reads since #25099.
- StabilityDevice (button_stability_tests.be) lacks it too.
Tests only; no firmware files change.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>