[Feature] add borderRadius option to heatmap (#16493)

* fix(chart): DefaultStatesMixinEmpasis -> DefaultStatesMixinEmphasis in util/types

* feat: heatmap itemStyle.borderRadius with https://github.com/apache/echarts/issues/16490

* feat(test): format heatmap-geo

* feat(test): heatmap itemStyle.borderRadius

* feat(chart): borderRadius support data item; adjust RectShape type be the instance with graphic.Rect

* feat(test): Heatmap Border Radius by Each Item

* feat(heatmap): mktest for heatmap-border-radius

* feat(heatmap): get borderRadius value before ensureState set emphasis

* feat(test): rename heatmap-border-radius to heatmap-borderRadius

* feat(heatmap): remove useless temporary variable shape

* feat(test): format heatmap (geo, borderRadius)

* feat(heatmap): remove uesless import in HeatmapView

* fix(test): revert heatmap-geo.html

* fix(heatmap): merge type & restore lost type about Calendar