Allow calling a user/group DM without ringing by holding Shift

[Firepal]

Current problem

Right now, calling rings for everyone in that DM. This is not always desired.

Proposed change

When holding Shift and clicking the Call button, it should put you in a call by yourself, without ringing other users.

Additional information

Could be nice to also add Ctrl+Shift+` to this (although Ctrl+` is already inaccessible on French AZERTY keyboards without Shift).

Acknowledgements

• I searched existing discussions.