Fix Alexa PowerController bool payload mismatch on Homebridge 2.x

[Copilot]

Homebridge 2.x/HAP-NodeJS 2.x strictly validates characteristic types. Alexa.PowerController commands were sending integer 1/0 from discovery cookies into bool characteristics, causing -70410 and Alexa “Device Unresponsive”.

• Runtime compatibility guard (cached-cookie safe)

  • Updated alexaPowerController to coerce legacy cookie values at execution time:
    • 1 -> true
    • 0 -> false
    • all other values unchanged (no behavior change for non-bool paths)

• Correct type at discovery source

  • Updated parse/Characteristic for On/Active actions to emit boolean cookie values directly:
    • TurnOn: true
    • TurnOff: false

• Regression coverage

  • Added focused tests for:
    • coercion of legacy 1/0 cookies in alexaPowerController
    • passthrough of non-binary values
    • boolean cookie generation for On characteristics
  • Updated discovery snapshot fixtures to reflect boolean TurnOn/TurnOff values where applicable.

// alexaPowerController payload normalization
"value": (haAction.value === 1 ? true : (haAction.value === 0 ? false : haAction.value))