Even tho it says this parity fix is resolved, the only thing new that the villagers do now is to shoot fireworks when a raid has been defeted.
MCPE-152553
Villagers don’t give items after finishing a raid
Open
22
(Unassigned)
175968
Confirmed
Multiple
Java-parity, raid, villagers
1.18.12 Hotfix, 1.18.31, 1.19.2 Hotfix, 1.20.0.23 Preview, 1.19.81 Hotfix
Retrieved
In Bedrock Edition the raiders have extra drops, instead of the villagers throwing free items, so I expect this is working as intended.