* Change 'Verify Session' to 'Start Verification'
* Update strings for the verification dialog
This completes the Element Web part of
https://github.com/element-hq/element-meta/issues/2898
* fixup! Update strings for the verification dialog
Remove separate _unsent string
* Test that VerificationRequestDialog updates when phase changes
* Change the title of VerificationRequestDialog when a request is cancelled
Part of implementing
https://github.com/element-hq/element-meta/issues/2898 but split out as
a separate change because it involves making VerificationRequestDialog
listen for changes to the verificationRequest so it can update based on
changes to phase.
* Tests for VerificationRequestDialog
* Fix theoretical bug where VerificationRequestDialog uses an outdated request
We were passing on `this.props.verificationRequest` to `EncryptionPanel` but we
should be passing on the request in `this.state`. This would not cause a problem
in practice because the `EncryptionPanel` immediately overwrites the request if
you supply a `verificationRequestPromise`.
