fix: (1) Fix geo roam (pan and zoom) causes visual artifacts -- geo coord sys and its content (e.g., scatter) should visually align during roaming animation and manual roam. (2) Refactor to uniform roaming impl (via RoamController and ViewCoordSys) and clarify `updateTransform` and related code. (3) Enable scatter and effectScatter clip in geo. (4) Fix aria: palette is modified to ec instance local rather than global, which is more reasonable. (5) Fix map series roaming bug: roam and then click legend hide the first series and then roam and then click legend to restore the first series, the map should not jump.