[ShadowContainer][Wasm] Shadow Builder - Delay visible when adding/removing shadows or switching to Light/Dark

[rafael-rosa-knowcode]

GitHub Issue (If applicable): closes: #976

PR Type

What kind of change does this PR introduce?

• Bugfix

What is the current behavior?

Shadow Builder - Delay visible when adding/removing shadows or switching to Light/Dark for Wasm
(should be carefully tested on the other platforms)

What is the new behavior?

No delay visible

PR Checklist

Please check if your PR fulfills the following requirements:

• Tested code with current supported SDKs
• Tested the changes where applicable:
  • UWP
  • WinUI
  • iOS
  • Android
  • WASM
  • MacOS
• Updated the documentation as needed:
  • General Doc Update
  • Controls Doc Update
  • Extensions Doc Update
  • controls-styles.md
  • lightweight-styling.md (LightWeight Styling Resource Keys)
• Runtime Tests and/or UI Tests for the changes have been added (for bug fixes / features) (if applicable)
• Contains NO breaking changes
• Associated with an issue (GitHub or internal)
• Commits must be following the Conventional Commits specification.

Other information

Internal Issue (If applicable):

[roubachof]

Careful: invalidating the canvas layout and invalidating the skia canvas are 2 different things.
We can't just delete an invalidation cause it seems to fix an issue.
Let me try to fix the perf issues in #830.