Slider handle is in wrong location when used with Quarto

[wch]

This is originally from rstudio/shiny#3905, but that issue can't be transferred here because it's a different Github org.

When using the sliderInput with a different build of Bootstrap (compared to the bootstrap.css in bslib), the slider looks like this:

This is because the CSS for the handle position is in bslib's copy of bootstrap.css:

This happens when using the slider in a Quarto document.