Delay voice first-join notice until no mod present

[Rinzii]

Also applied planned changes earlier discussed with @jeremy-rifkin and @xLuxy to make it so that we DM users first before falling back to using the normal local channel to tell the user if a DM fails.

[jeremy-rifkin]

I don't think I see the motivation for doing this only when a mod isn't present. If this message isn't sent, the user is probably going to ping mods asking and then someone is going to have to explain it to them, which is the exact problem this message is trying to solve.

[Rinzii]

I don't think I see the motivation for doing this only when a mod isn't present. If this message isn't sent, the user is probably going to ping mods asking and then someone is going to have to explain it to them, which is the exact problem this message is trying to solve.

iirc the motivation was discussed somewhere but idr where, but the general idea was many times when a VC mod is in a channel a user joins, gets the message, and is either confused they can talk, miss the message because they can talk, or some other mixture of that. When this PR was made it was a very frequent occurrence and still happens now as there is no easy way to tell if a VC mod is present or not.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud