Shadow: Follow up to address feedback.

[madhusudhand]

This issue is a followup for #57101.

• remove useShadowProps hook - feedback from here - Shadow: remove additional wrapper around getShadowClassesAndStyles #58297
• Skip block style serialization - Shadow: Update shadow support to allow explicit skipping of serialization #58306
• Default presets are opted-in by default - change to only show if theme opts in?
  [ Should we introduce without core presets enabled? As there are no controls ] - Disable core shadow presets by default, let themes opt-in #58766
• Does it work with appearance tools toggle? (Should be turned off if appearance tools are off)
• Move shadow out of Effects panel and possibility keep it under Border. Design team to provide feedback @jasmussen - Move Shadow controls to Border panel #58466
• Hide shadow control by default and let blocks control the default visibility using __experimentalDefaultControls

[madhusudhand]

Default presets are opted-in by default - change to only show if theme opts in?

@mtias
Default presets were already enabled by default in the previous release for button in global styles.
Changing the behaviour now might break themes that use shadow for button.

Move shadow out of Effects panel and possibility keep it under Border.

@jasmussen could you provide updated designs.

[jasmussen]

Yep, I'll update a sketch when I have a moment. For now, though, the idea is to just rename the current panel called "Border", call it "Border & Shadow", and move the control to the bottom of that panel.

[jasmussen]

Found these:

The panel title can be contextual, when a block only supports border, call it "Border", if a block only supports shadow, call it "Shadow", when it supports both, call it "Border & Shadow".

[richtabor]

Should we introduce without core presets enabled? As there are no controls

This first iteration does not include the ability to create shadows, so if there are no presets, you should not be able to have the control available. When we do follow-up with shadow creation, then yes, it should be available as an option to apply.

[richtabor]

Default presets are opted-in by default - change to only show if theme opts in?

I would expect shadow presets to work like other default presets—defaultDuotone, defaultPalette, defaultGradients, etc.

[madhusudhand]

Closing as all feedback items are complete.