[iOS] Pot transactions initially garbled for joint holder

Issue: I created some pots. When my husband opened the app, he saw the transactions but these were listed against (I assume) the UUID for the pot. The list of pots didn’t show the new pots at all.

Eventually the new pots loaded, but the transaction list still showed the UUID pot information.

Killing the app and relaunching resolves the issue.

It seems like the transaction list assumes it’ll always know about new pots, and doesn’t refresh when information about new pots is eventually loaded.

Details to reproduce: As above
OS: iOS 12.3 (16F156)
Device: iPhone X
App Version: 2.42.0 #527

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