fix: always update group info when a new member joins [WPB-4464] #14829

All 2 159 tests pass, 6 skipped in 13s

2 165 tests +2 165 2 159 ✔️ +2 159 13s ⏱️ +13s
      1 suites +      1       6 💤 +      6
      1 files +      1       0 ❌ ±      0

Results for commit d4142de. ± Comparison against earlier commit ca88468.