Rename CanvasItem's update() to redraw() for Godot 4

[MewPurPur]

Describe the project you are working on

2D Platformer, using some tool classes to draw things in the editor.

Describe the problem or limitation you are having in your project

I wrote bad logic, calling reduntantly the CanvasItem.update() method, because it was too vague. I thought it was part of Node and responsible for updating configuration warnings too. Even if I'd seen docs, the name is SO vague I might not have thought much of it.

Describe the feature / enhancement and how it helps to overcome the problem or limitation

As suggested in old comments from Rename Tracker proposals and from godotengine/godot#64377 , rename the method to redraw().

It wouldn't solve anything in my project anymore, but it would spare future users from misunderstanding the method and making mistakes like mine.

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

N/A

If this enhancement will not be used often, can it be worked around with a few lines of script?

N/A

Is there a reason why this should be core and not an add-on in the asset library?

N/A

[SilencedPerson]

I kept trying to name functions "update" only to remember it's already in use when I started with Godot.. I would appreciate this one.