Cherry-picks for the master (4.4) branch - 2nd batch

[Spartan322]

Related:

• Focus "outline" for sliders moves with scrolling  godotengine/godot#97825
• ScrollBar StyleBoxTexture Grabber only half usable? godotengine/godot#98004
• Switching to RAW mode and then to RGB will change slider max value until refreshed godotengine/godot#62894
• Pressing the ColorPicker's sample left half side changes the color to black when old color is not displayed. godotengine/godot#88073

Includes:

• [4.3] Fix EditorSpinSlider grabber doesn't follow parent when scrolling #776
• [4.3] Fix ScrollBar grabber mouse ignores scroll margin #777
• [4.3] Enable ColorPicker RGB+RAW modes to have overbright values #778
• [4.3] Remove superfluous ColorPicker Containers #779
• [4.3] Unify ColorPicker HSV Rectangle/Wheel draw #781
• [4.3] Remove ColorModeOKHSL.get_shape_override #782
• [4.3] Unify ColorPicker color mode slider colors #783
• [4.3] Remove hide on ColorPicker color picking #784
• [4.3] Fix RGB/RAW ColorMode jank sliders and spinbox #794
• [4.3] Fix ColorPicker inactive left side sample reset #795
• [4.3] Fix ColorPicker overbright indicator position #803
• [4.3] Fix CanvasItemEditor redraw on key echo #805
• [4.3] Unify CanvasItemEditor duplicate hovering behavior #806
• [4.3] Overhaul CanvasItemEditor snap lines drawing and input #807
• [4.3] Fix Linux desktop files #812
• [4.3] Fix Godot Reference for update URL #819
• [4.3] Fix Kotlin license headers referring to Godot #829

[RadenTheFolf]

not sure why some of the changes are just switching if statements from if condition {} else {} to the conditional op ? . guess it does look cleaner