revert: "fix(migration): pick one-on-one proteus conversation in alphabetically order for MLS migration (WPB-10259)" #15301

All 2 960 tests pass, 107 skipped in 2m 43s

3 067 tests +137 2 960 ✔️ +153 2m 43s ⏱️ + 2m 19s
  524 suites +  27   107 💤 -   16
  524 files +  27       0 ❌ ±    0

Results for commit ce769a4. ± Comparison against earlier commit cbf50d5.