fix: 修复知识库增加重复校验后无法保存的问题

src/views/setting/KnowledgeBaseForm.vue

@@ -304,11 +304,8 @@ export default {
       if (this.blockOperation.save) { return }
       this.blockOperation.save = true
       // 校验form + upload + preview
-      let formValid
       this.$refs.form.validate(valid => {
-        formValid = valid
-      })
-
+        if (valid) {
           if (!this.uploaded) {
             this.uploadErrorTip = this.$t('validate.required')
           } else {
@@ -324,7 +321,7 @@ export default {
           }
 
           // 校验通过后组织数据、请求接口
-      if (formValid && !this.uploadErrorTip && !this.previewErrorTip) {
+          if (valid && !this.uploadErrorTip && !this.previewErrorTip) {
             const postData = {
               tagName: this.editObject.tagName,
               tagType: this.editObject.tagType,
@@ -363,6 +360,10 @@ export default {
           } else {
             this.blockOperation.save = false
           }
+        } else {
+          this.blockOperation.save = false
+        }
+      })
     },
     hasErrorImportedData () {
       return this.importedData.filter(d => d.status !== 1).length > 0