fix(mini): preserve child name input during pinyin composition

banban-mini/src/pages/bind/index.tsx

@@ -20,7 +20,6 @@ import {
   CHILD_NAME_RULE_MESSAGE,
   createChild,
   getChildren,
-  sanitizeChildNameInput,
   resolveChildSelection,
   setSelectedChildId as setStoredSelectedChildId,
   validateChildNameInput,
@@ -804,9 +803,10 @@ export default function Bind() {
                   ? children.length > 0 ? '不选已有宝贝时，可填写2-5位简体中文姓名（暂不支持数字和英文）' : CHILD_NAME_RULE_MESSAGE
                   : children.length > 0 ? '不选已有宝贝时，可填写2-5位简体中文姓名（暂不支持数字和英文）' : '可不填，稍后再关联宝贝'
               }
-              maxlength={5}
+              maxlength={-1}
               onInput={(event) => {
-                const nextChildName = sanitizeChildNameInput(event.detail.value)
+                // Preserve pinyin composition; validate the final name on submit.
+                const nextChildName = event.detail.value
                 setNewChildName(nextChildName)
                 if (nextChildName) {
                   setSelectedChildId(null)