fix(fuselage): correct Slider track fill for non-zero minValue and RTL locales

[aniruddhaadak80]

Original commits

Fixes the Slider track fill rendering in two scenarios where it did not match the actual thumb position:

1. Non-zero minValue produced a wrong fill position

getThumbPosition computed (value / (maxValue - minValue)) * 100, which ignores the offset of minValue. For example, a slider with minValue={50} maxValue={150} and value 100 rendered its fill at 100% instead of 50%.

The component now uses react-stately's own percent calculation (state.getThumbPercent(index)), which also fixes multi-thumb sliders where each thumb can have a different range (previously both thumbs shared getThumbMaxValue(1) || getThumbMaxValue(0)).

2. Horizontal fill ignored RTL direction

react-aria flips horizontal slider geometry in RTL locales, but the track gradient was hardcoded to to right, so in RTL languages the filled portion appeared on the wrong side of the thumb. The gradient direction now follows useLocale().direction.

Evidence that the new tests catch the original bugs

Running the updated spec against the old SliderTrack.tsx:

x should position the track fill relative to minValue
x should mirror the track fill direction in RTL locales
x should keep the multi-thumb band ordered in RTL locales
Tests:       3 failed, 5 passed, 8 total

With the fixed SliderTrack.tsx:

PASS packages/fuselage/src/components/Slider/Slider.spec.tsx
Tests:       8 passed, 8 total

The vertical slider path is intentionally untouched: to top + percent-from-min was already correct for vertical orientation.

@rocket.chat/fuselage patch changeset included.

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Latest commit: b12ad2e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@rocket.chat/fuselage	Patch

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