Quota not updated after auto deletion setting change, only updated after restart.

[Simon-Laux]

Would make sense to refresh quota after messages were deleted. Otherwise it looks like deletion didn't work.

[iequidoo]

https://github.com/deltachat/deltachat-core-rust/blob/6607b7fd621f6e3f5a8d408fa591d0677040e69f/src/scheduler.rs#L476-L482
Should be <

[iequidoo]

#5717 is merged, but there's no test (so far?), so the fix should be verified by hand.