fix(state): forget to remove saved states in clearStates.

src/echarts.ts

@@ -1836,6 +1836,12 @@ class ECharts extends Eventful {
                 // TODO If el is incremental.
                 if (el.hasState()) {
                     (el as DisplayableWithStatesHistory).__prevStates = el.currentStates;
+                    el.clearStates();
+                }
+                else if ((el as DisplayableWithStatesHistory).__prevStates) {
+                    (el as DisplayableWithStatesHistory).__prevStates = null;
+                }
+
                 const textContent = el.getTextContent();
                 const textGuide = el.getTextGuideLine();
                 if (el.stateTransition) {
@@ -1847,8 +1853,6 @@ class ECharts extends Eventful {
                 if (textGuide && textGuide.stateTransition) {
                     textGuide.stateTransition = null;
                 }
-                    el.clearStates();
-                }
             });
         }