Compose: Migrate DaxSlider

[0nko]

Task/Issue URL: https://app.asana.com/1/137249556945/project/1207418217763355/task/1211670072079719?focus=true

Description

Adds the Compose DaxSlider to the ADS.

Also adds the NoRawM3SliderUsage lint rule (errors on raw Material3 Slider outside the design-system modules; the legacy View com.google.android.material.slider.Slider is untouched) and a showcase in the ADS internal catalog.

Steps to test this PR

ADS catalog

• Open Settings → "Android Design System Preview" → Interactive tab
• Scroll to the Slider section
• Verify the VIEW label above the existing Material slider, and a COMPOSE label above three DaxSlider rows
• Verify the Compose rows are: a continuous slider at ~30%, a stepped slider (70–170, 9 steps) at 100, and a disabled slider at ~30%
• Drag the first two sliders and verify the thumb follows the drag, the stepped one snaps between steps
• Verify the disabled slider is dimmed and does not respond to drags
• Confirm the above in both light and dark themes

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Note

Low Risk
New design-system component and lint enforcement only; no production feature flows or security-sensitive logic changed.

Overview
Introduces DaxSlider, a Compose design-system slider that wraps Material3 Slider with DuckDuckGo theme colors, a custom thumb, track height from tokens, and no value labels, ticks, or stop indicators. It supports continuous and stepped ranges, disabled state (dimmed via alpha), and onValueChangeFinished.

The ADS internal catalog Slider section now shows the legacy View Material Slider and a COMPOSE block with three interactive DaxSlider examples (continuous, stepped 70–170, disabled), wired through SliderComponentViewHolder with theme support.

Adds NoRawM3SliderUsage lint (error on androidx.compose.material3.Slider outside design-system modules; View com.google.android.material.slider.Slider unchanged), registered in DuckDuckGoIssueRegistry, with unit tests.

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[mikescamell]

A few Compose API suggestions.

[0nko]

Thanks @mikescamell! I've addressed all your comments.

[mikescamell]

LGTM! Nice work