(Also, don’t call out recipients that don’t support New Groups.)
We try to populate this picker with users we believe are registered. Now
that GV2 is fully rolled out, all the recipients we believe are
registered should have a UUID. (If any don’t, we’ll resolve that on
launch via UUIDBackfillTask.) Since these proactive fetches *shouldn’t*
run, prevent them from running by removing them entirely.
If we hit a rare race condition where a recipient is missing a UUID,
we’ll still perform a lookup when trying to select that recipient.
In these rare edge cases where a recipient doesn’t have a UUID (which,
again, shouldn’t happen), the subtitle indicating that they don’t
support New Groups will be out of date. By removing proactive fetches,
it’ll remain out of date until the user taps the row. To avoid
confusion, defer showing an error until the user taps on the recipient.
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