Add support for multiple chains

[jpuri]

Add support for multiple chains in PPOMController.

Fixes: MetaMask/MetaMask-planning#1808
Fixes: MetaMask/metamask-extension#21913

[segun]

LGTM

[segun]

@jpuri

I used this branch in my extension PR but MM won't start and this error shows up in the console

lockdown-install.js:1 SES_UNHANDLED_REJECTION: Error: Event missing from allow list: NetworkController:stateChange
at RestrictedControllerMessenger.subscribe (RestrictedControllerMessenger.js:144:1)
at PPOMController._PPOMController_subscribeMessageEvents (ppom-controller.js:329:1)
at new PPOMController (ppom-controller.js:176:1)
at new MetamaskController (metamask-controller.js:713:27)
at setupController (background.js:504:16)
at initialize (background.js:287:5)

[jpuri]

@jpuri

I used this branch in my extension PR but MM won't start and this error shows up in the console

lockdown-install.js:1 SES_UNHANDLED_REJECTION: Error: Event missing from allow list: NetworkController:stateChange
at RestrictedControllerMessenger.subscribe (RestrictedControllerMessenger.js:144:1)
at PPOMController._PPOMController_subscribeMessageEvents (ppom-controller.js:329:1)
at new PPOMController (ppom-controller.js:176:1)
at new MetamaskController (metamask-controller.js:713:27)
at setupController (background.js:504:16)
at initialize (background.js:287:5)

It requires a fix in extension, I will prepare once PPOMController deployment is done.