Fix alignment of microphone in speakers list

[anbebe]

Closes #4407

[emanuelschuetze]

Tested. Mic icon is not alligned correcly, see red line in screenshot:

The left side of the mic icon should placed at the red line.

[Elblinator]

code

[MSoeb]

I found an error, which occurs with motions that have visibility restrictions. If I project a motion with the workflow 'complex' and add someone to the list of speakers an error occurs in the console. I've checked the behavior on our test instance and it didn't occur. So I assume, that the PR is somehow related to the problem. Could you please check this? - Except of this, the position of the icon looks good.

Error message:

Reproduction:

1. open a meeting
2. open motions. create a motion with complex workflow. don't change state -> project it
3. open console
4. open Autopilot. Add someone to list or push the Play button. Interactions with the list of speakers leads to errors.