(1) rename `labelDisplayThreshold` to `minShowLabelAngle` (name follow the style of `minAngle` `startAngle`)
(2) move the logic to the "layout" phase, which is able to skip the process that avoid label overlap if do not display.
See more info in #8997

Enhance highlight downplay API, support keep highlighted when change style (e.g., setOption or hoverLink).

delete limitScale
add filterValue

support dimension reference in label formatter.

Fix #6529 Fix #6516 Fix #6532 (fix flatterning textStyle, and emphasis without 'show' set in normal)