Room unread state shows joins/parts even if they're hidden

[maxlath]

Description

when toggling the option, join/parts messages are successfully hidden (see #916), but channels keep being displayed in bold even when no new messages were posted, which I suspect is due to the channel status still accounting for join/parts messages despite the option being toggled

Steps to reproduce

• Disable join/parts messages in user setting
• Look at channels being displayed in bold despite no new messages

Version information

riot-web : 0.15.7
olm : 2.2.1

• Platform: web
• Browser: Firefox 61.0
• OS: Ubuntu 16.04.4
• URL: https://riot.im/app/#/room/#freenode_#inventaire:matrix.org

[ara4n]

another for #3363.

[ara4n]

also very similar to #4947

[t3chguy]

I'm pretty sure this has been fixed along the way

[turt2live]

It wasn't

[t3chguy]

This will be fixed as part of FTUE Notifications

[t3chguy]

Closing in favour of #4947