Fix enabled state on webNavigation.
Fix enabled state on webNavigation.

`forTrusted()` for `checkEnabledAfterURLChange()` after web navigation
is being called with a request (not an event).  So make the request
trusted.

The symptom was that pass keys and the enabled state was not being
correctly updated on web navigation.

decaffeinate-examples/vimium,decaffeinate-examples/vimium,smblott-github/vimium,gdh1995/vimium,philc/vimium,philc/vimium,gdh1995/vimium,poacher2k/vimium,poacher2k/vimium,smblott-github/vimium,gdh1995/vimium,decaffeinate-examples/vimium,smblott-github/vimium,poacher2k/vimium,philc/vimium