perf(前端): Email纯文本, 不限制字数

src/views/Conversations/Online/Input/EmailComposer.jsx

@@ -216,8 +216,8 @@ const EmailComposer = ({ ...props }) => {
             ref={textInputRef}
             onFocus={() => handleFocus('mailcontent')}
             size='large'
-            maxLength={2000}
+            // maxLength={2000}
-            showCount={true}
+            // showCount={true}
             placeholder={!talkabled ? '请先选择会话' : '*纯文本邮件'}
             rows={2}
             disabled={!talkabled}