[0.75] Fix Headless Crash Tried to finish non-existent task with id

[cipolleschi]

Target Branch(es)

0.75

Link to commit or PR to be picked

facebook/react-native@b4532ad

Description

Sometimes a headless task tries to finish, but it doesn’t exist, which causes an exception.
No one knows how to reliably reproduce it, as it could be a race condition. However, if you attempt to remove a task that has already been removed, it shouldn’t cause an issue since you're trying to remove something that’s already gone (which is exactly what you want)