feat: 我的页面-优化

@@ -88,7 +88,7 @@
         this.deptPathsText =this.$store.state.user.deptPaths.length ? this.$store.state.user.deptPaths.join('，') : '',
         this.telephone = this.$store.state.user.telephone
         const _username = (this.username || '').trim()
-        this.initialNameChar = _username ? _username.charAt(0) : '登'
+        this.initialNameChar = _username ? _username.charAt(0) : ''
     },
     methods: {
       handleToPwd() {