Update Doc for Unfocused Acrylic and Opacity

[Jaswir]

Added Enable Unfocused Acrylic Global Setting

Updated Opacity and Acrylic. No more OS limitations!

https://github.com/microsoft/terminal/pull/15974

[learn-build-service-prod[bot]]

Learn Build status updates of commit dbe3376:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
TerminalDocs/customize-settings/interaction.md	:white_check_mark:Succeeded	View
TerminalDocs/customize-settings/profile-appearance.md	:white_check_mark:Succeeded	View

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[learn-build-service-prod[bot]]

Learn Build status updates of commit 867a779:

:warning: Validation status: warnings

File	Status	Preview URL	Details
TerminalDocs/customize-settings/interaction.md	:warning:Warning	View	Details
TerminalDocs/customize-settings/profile-appearance.md	:white_check_mark:Succeeded	View

TerminalDocs/customize-settings/interaction.md

• Line 29, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './../images/opacity.gif'.

For more details, please refer to the build report.

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