[Meter] Support <meter> element's high/low/optimum attributes

[mj12albert]

Split from #743

The HTML <meter> element is able to segment the range into high/medium/low segments and indicate which "pole" is optimum for sighted users, but there's no ARIA equivalent.

The native functionality of HTML meter which uses high low and optimum attributes have poor browser support: https://www.htmhell.dev/adventcalendar/2022/5/

One way the Meter component could support this is by providing this in aria-valuetext as suggested in w3c/aria#451 (comment)

This is expected to be considered for ARIA 1.3/1.4: w3c/aria#1336