Only copy room link when clicking on "copy" in share menu

[tibroc]

Is your feature request related to a problem? Please describe.

When clicking on "copy" in the share-Menu something like the following is in the clipboard:

Join "My Room" with Webconf
Link: https://webconf-next.uni-osnabrueck.de/rooms/myr-oom-lin-kxx

However, the expectation would be to just get the room link that can then easily be pasted anywhere without additional text.

Describe the solution you'd like

Just send the room link to the clipboard, without including additional text.

Additional context
Was reported by multiple test users.

[SamuelWei]

To only copy the link you can click into the field, which auto selects the content to make copy easier.
The purpose of this button was to also include the access code if present and have a text message to send via text message, email, etc.

We could think about adding the access code to the room url linke pilos.tld/rooms/abc-def-gef#code=123456789 which would auto insert the code. This would allow us to only copy a link.

An other alternative could be to add seperate buttons for these two use cases.