Editor: Fix EditorHelpBitTooltip for Signals dock

[dalexeev]

• Fixes Signal tooltip doesn't go away when moving mouse to another signal in single window mode #93698.
• Alternative to Fix signal tooltip not leaving #93943.
• As for Connecting a signal with a double click is too difficult #92382, I can't confirm with this PR step 4 Be confused for a few seconds --> Popup pops up again. Once a tooltip is hidden, it does not appear again until you move the cursor.

[kitbdev]

• This does fix Signal tooltip doesn't go away when moving mouse to another signal in single window mode #93698

• As for Connecting a signal with a double click is too difficult #92382, the tooltip appears again if the mouse is clicked, it doesn't need to be moved. When the tooltip is shown, trying to double click will use one input to close the tooltip, and the other to (re)select the signal, and while the user is confused that the connect dialog doesn't show, the tooltip reappears.

This does not fix the other issues with the tooltip.
In single window mode, the tooltip doesn't stay when hovered over and cannot be interacted with. #92382 isn't an issue in single window mode.
In not single window mode, the tooltip doesn't change when hovering over different items.

When in single window mode it is now the same and when not it has issues, so I still prefer #93943

Also are there any signals that have a description long enough to need scrolling functionality in the tooltip?

Edit: Maybe forwarding mouse inputs outside of the tooltip will fix some of the issues?

[KoBeWi]

It's a proper fix for #93698

Does not fix #92382, but IMO it's not a big problem. You can normally double-click before the tooltip appears.

[akien-mga]

Overall I find that we're going in a somewhat hacky direction here, sidestepping the existing system for custom tooltips. If the current system isn't sufficient, we should look into improving it IMO.

But let's merge this approach for now to solve the main regression, and see how to deal with the other problems outlined by @kitbdev. I'll release 4.3 beta 3 soon so we should be able to get some testing done.

If we find more issues that aren't easy to address, I would suggest that we then consider #93943 instead to use the proper system in place, and work on improving the usability of the tooltip system for 4.4.

[akien-mga]

Thanks!

[dalexeev]

Overall I find that we're going in a somewhat hacky direction here, sidestepping the existing system for custom tooltips. If the current system isn't sufficient, we should look into improving it IMO.

Agree. See #89058 (comment).