reset idle timeout when pushing a new compositor layer

[pascalkuthe]

Fixes #4956

As suggested in #4956 (comment) the right fix is to
reset the idle timer when pushing new layers into the compositor.

[the-mikedavis]

I see what you were saying in #5115 with the callsites all adding editor args and that being a bit noisy. I don't see a better way to give Compositor::push access to the idle timer though so I think this looks good 👍

[Philipp-M]

LGTM, fixes also when just opening the file-picker with a low idle-timeout (same issue as #4956)

[Philipp-M]

Is there anything blocking this? This seems relatively straight-forward.

[Philipp-M]

Well apart from the fact, being completely out of sync with master. I have decided against fixing merge/rebase conflicts and replay the changes (as it seemed simpler than fixing the conflicts) for my own fork.

Here's a version that is has no merge conflicts with master: 97f310a

[pascalkuthe]

I was waiting for a decision from @archseer whether he wants to go forward with this. If he approves of the general idea I would rebase. In the long term this is not really the the right fix since I mostly want to rebase the kitchensinky idle timeout with a more granular event system. So it may not be worth to merge this over that.

[Philipp-M]

Yeah absolutely agree with a finer-grained idle-timeout system, thought about that myself already.
But since this PR doesn't add up a lot of complexity and fixes an obvious bug, I think it makes sense to merge this in the mean time (can be refactored/rewritten later anyways).

[pascalkuthe]

I already have a working event system locally (just haven't go around to finishing it) so its not too far away :)

I would be ok with rebasing and merging this it depends on what @archseer thinks

[the-mikedavis]

@pascalkuthe do we need this anymore now that we have #8021?

[pascalkuthe]

Fixing this still needs some work to switch the picker away from the idle timeout but yeah let's close this. I don't think this is the right approach now thatwe have the Event system