atm we can do this:

css({
  '--font-size': 'var(--fluid-text-size_min-max)',
  '--fluid-text-size-min': 2,
  '--fluid-text-size-max': 10,
});

but this defeats the point of the constrained text sizes available in theme when applying non-fluid font sizes:

css({
  '--font-size': 'var(--text-size_xs)', // we can't pass `2` or `10` here, only a token 
});

this ticket is to make the api more consistent when applying fluid/non-fluid font sizes.

css({
  '--font-size': 'var(--fluid-text-size-clamp_min-max)',
  '--fluid-text-size-min': 'var(--fluid-text-size_xs)',
  '--fluid-text-size-max': 'var(--fluid-text-size_lg)',
});

this will be a breaking change because fluid breakpoint tokens need to be suffixed with clamp. this allows fluid-text-size key to be numeric, unitless values that match the text-size tokens.