Fix: Fixed an issue where folder icon customization apply before saving

[0x5bfa]

Description

Fix an issue which has been reported.

Motivation and Context

• Do not change the icons when 'Restore' button clicked
• Do not change the icons when an icon selected

PR Checklist

• Were these changes approved in an issue or discussion with the project maintainers? In order to prevent extra work, feature requests and changes to the codebase must be approved before the pull request will be reviewed. This prevents extra work for the contributors and maintainers.
  Closes Bug: Folder customization are applied directly #11917
• Did you build the app and test your changes?
• Did you check for accessibility? You can use Accessibility Insights for this.
• Did you remove any strings from the en-us resource file?
  • Did you search the solution to see if the string is still being used?
• Did you implement any design changes to an existing feature?
  • Was this change approved?
• Are there any other steps that were used to validate these changes?
  1. Open app
  2. Open properties of a folder
  3. Switch tab to Customization
  4. Change icons

Screenshots

No response

[ferrariofilippo]

LGTM and works for me!
Just a question: shouldn't private variables names start with a lowercase letter?

[0x5bfa]

I don't know. I thought so as well but when I write private fields/properties as lower, IntelliSense suggestions have a ‘Name Violation’ item. I will fix.

[yaira2]

Just a question: shouldn't private variables names start with a lowercase letter?

Yes, can you fix this?

[0x5bfa]

FYI(unrelated to this), By original functionality, if you switch tabs, props window will discard user changes unless we don't have Apply button or fix that issue.