Room ID handling breaks with Room Version 12 (MSC4291)

Room Version 12 changes the format of Matrix room IDs to hash-based identifiers (MSC4291).

### references:

* https://github.com/matrix-org/matrix-spec-proposals/blob/matthew/msc4291/proposals/4291-room-ids-as-hashes.md
* https://spec.matrix.org/v1.16/appendices/#room-ids

matrix-commander contains logic that assumes legacy room ID structure

## Problem

Valid room v12 IDs be rejected due to these assumptions.

## Expected behavior

Room IDs must be treated as opaque values as defined by the spec.