Allows for the theming widget to style samples

[ChronosSF]

No description provided.

[ChronosSF]

@copilot , the input - related changes are no longer okay, restore them so that the PR only includes the theme picker -related code.

[Copilot]

🟡 Changes recommended

The theme guard accepts inherited keys, and one live-editing configuration still references the deleted base component.

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Pull request overview

Centralizes runtime theme switching so documentation widgets can restyle embedded samples.

Changes:

• Adds swappable prebuilt Ignite UI theme stylesheets.
• Introduces ThemeService for theme messages, modes, and typefaces.
• Removes legacy input-group theme handling.

File summaries

File	Description
angular.json	Copies prebuilt themes into assets.
src/index.html	Adds the active theme link.
src/styles.scss	Removes the compiled global theme.
src/app/app.component.ts	Delegates theme messages to the service.
src/app/services/theme.service.ts	Implements runtime theme switching.
src/app/data-entries/input-group/base-input.component.ts	Removes legacy theme handling.
src/app/data-entries/input-group/input-group-sample-1/input-group-sample-1.component.ts	Removes legacy base inheritance.
src/app/data-entries/input-group/input-group-sample-2/input-group-sample-2.component.ts	Removes legacy base inheritance.
src/app/data-entries/input-group/input-group-sample-3/input-group-sample-3.component.ts	Removes legacy base inheritance.
src/app/data-entries/input-group/input-group-sample-4/input-group-sample-4.component.ts	Removes legacy base inheritance.
src/app/data-entries/input-group/input-group-sample-5/input-group-sample-5.component.ts	Removes legacy base inheritance.
src/app/data-entries/input-group/input-group-sample-6/input-group-sample-6.component.ts	Removes legacy base inheritance.
live-editing/configs/InputGroupConfigGenerator.ts	Removes obsolete additional-file entries.

Review details

Suppressed comments (1)

src/app/data-entries/input-group/base-input.component.ts:1

• Deleting this file leaves live-editing/configs/InputGroupConfigGenerator.ts:48 pointing to it in InputGroupStyleComponent's additionalFiles. That live-editing configuration will now request a file that no longer exists; remove the remaining entry as part of this deletion.

• Files reviewed: 13/13 changed files
• Comments generated: 1
• Review effort level: Balanced

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[Copilot]

@copilot , the input - related changes are no longer okay, restore them so that the PR only includes the theme picker -related code.

Restored the input samples, shared base component, and live-editing configuration in f4663ce. They now match vnext exactly, leaving only theme-picker-related changes in the PR. Review and CodeQL found no issues; local checks were blocked by missing dependencies.

[Copilot]

🟡 Changes recommended

The theme guard accepts inherited keys, and one live-editing configuration still references the deleted base component....

Addressed the theme guard in 14f1f0f48. The live-editing concern was already resolved by f4663ceda, which restored the referenced base component, so no configuration change was needed.