Option to disable notification count by changing room states.

[Fadikkop]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
I was frustrated when in large public rooms I see an notification count for joins, leaves and invites.

Describe the solution you'd like
A clear and concise description of what you want to happen.
I would like an option to disable notification counts on such room-events.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.