Only resend proposals once after external commit #4103
Merged
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If the backend somehow ends up with duplicate remove proposals, when an external commit is processed duplicates are now filtered out before resending them.
I still don't know the root cause for the existence of duplicate proposals (#4102 is an attempt at reproducing), but this PR should mitigate the consequence of such an occurrence.
There are no new tests here, because I don't know how to cause duplicate proposals to be stored (short of adding them manually in the test).
https://wearezeta.atlassian.net/browse/WPB-9210
Checklist
changelog.d