Communication: Add loading indicator when adding users to channel
#57127
| Job | Run time |
|---|---|
| 14m 31s | |
| 17m 10s | |
| 2m 42s | |
| 2m 32s | |
| 1m 57s | |
| 42s | |
| 0s | |
| 0s | |
| 39m 34s |