fix(calendar): 新增初始化位置方法

src/packages/__VUE/calendar/doc.en-US.md

@@ -643,3 +643,4 @@ Through [ref](https://vuejs.org/guide/essentials/template-refs.html), you can ge
 | Name | Description             | Arguments          |
 |--------|------------------|---------------|
 | scrollToDate   | Scroll to the month of the specified date | string:'2021-12-30' |
+| initPosition`v3.3.4`   | Initialize scroll position |  |

src/packages/__VUE/calendar/doc.md

@@ -636,3 +636,4 @@ export default {
 | 方法名 | 说明             | 参数          |
 |--------|------------------|---------------|
 | scrollToDate   | 滚动到指定日期所在月 | string:'2021-12-30' |
+| initPosition`v3.3.4`   | 初始化滚动位置 | 无 |

src/packages/__VUE/calendar/index.taro.vue

@@ -184,8 +184,12 @@ export default create({
     const scrollToDate = (date: string) => {
       calendarRef.value?.scrollToDate(date);
     };
+    const initPosition = () => {
+      calendarRef.value?.initPosition();
+    };
     useExpose({
-      scrollToDate
+      scrollToDate,
+      initPosition
     });
     // methods
     const update = () => {

src/packages/__VUE/calendar/index.vue

@@ -183,8 +183,12 @@ export default create({
     const scrollToDate = (date: string) => {
       calendarRef.value?.scrollToDate(date);
     };
+    const initPosition = () => {
+      calendarRef.value?.initPosition();
+    };
     useExpose({
-      scrollToDate
+      scrollToDate,
+      initPosition
     });
     // methods
     const update = () => {

src/packages/__VUE/calendaritem/index.taro.vue

@@ -623,9 +623,8 @@ export default create({
       let containerHeight = lastItem.cssHeight + lastItem.cssScrollHeight;
 
       state.containerHeight = `${containerHeight}px`;
-      state.scrollTop = Math.ceil(state.monthsData[state.currentIndex].cssScrollHeight);
+      initPosition();
       state.avgHeight = Math.floor(containerHeight / (monthsNum + 1));
-
       if (months?.value) {
         viewHeight.value = months.value.clientHeight;
       }
@@ -691,8 +690,12 @@ export default create({
         }
       });
     };
+    const initPosition = () => {
+      state.scrollTop = Math.ceil(state.monthsData[state.currentIndex].cssScrollHeight);
+    };
     useExpose({
-      scrollToDate
+      scrollToDate,
+      initPosition
     });
     const setDefaultRange = (monthsNum: number, current: number) => {
       let rangeArr: any[] = [];

src/packages/__VUE/calendaritem/index.vue

@@ -632,7 +632,7 @@ export default create({
         if (months?.value && monthsPanel?.value && viewArea?.value) {
           viewHeight.value = months.value.clientHeight;
           monthsPanel.value.style.height = `${containerHeight}px`;
-          months.value.scrollTop = state.monthsData[state.currentIndex].cssScrollHeight;
+          initPosition();
         }
       });
       state.avgHeight = Math.floor(containerHeight / (monthsNum + 1));
@@ -671,8 +671,14 @@ export default create({
         }
       });
     };
+    const initPosition = () => {
+      if (months?.value) {
+        months.value.scrollTop = state.monthsData[state.currentIndex].cssScrollHeight;
+      }
+    };
     useExpose({
-      scrollToDate
+      scrollToDate,
+      initPosition
     });
     // 设置当前可见月份
     const setDefaultRange = (monthsNum: number, current: number) => {

src/sites/mobile-taro/vue/src/app.scss

@@ -8,7 +8,7 @@ page,
     overflow-x: hidden;
     overflow-y: auto;
     padding: 0 17px 17px 17px;
-
+    box-sizing: border-box;
     &.full {
       padding: 0 0 0 0;
       h2 {