[Bug]: Slider with `variant="filled"` AND `fill-start` fills in unexpected ways.

[Westbrook]

trafficstars

Code of conduct

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Impacted component(s)

Slider

Expected behavior

When using the Slider like so:

<sp-slider
  variant="filled"
  fill-start
></sp-slider>

I'd expect the fill to start at 50% of the track and fill from there to the current handle location.

Actual behavior

The fill starts at 0 and goes to the handle, if the handle is less that 50% it will continue through the handle to the 50% point.

Screenshots

What browsers are you seeing the problem in?

No response

How can we reproduce this issue?

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Sample code that illustrates the problem

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Logs taken while reproducing problem

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