Feat：阻止非富文本模式时的节点文本可被选中

simple-mind-map/src/constants/constant.js

@@ -205,6 +205,10 @@ export const cssContent = `
     opacity: 1;
     stroke-width: 2;
   }
+
+  .smm-text-node-wrap {
+    user-select: none;
+  }
 `
 
 // html自闭合标签列表

simple-mind-map/src/core/render/node/nodeCreateContents.js

@@ -261,7 +261,8 @@ function createTextNode(specifyText) {
   })
   textArr = textArr.join('\n').split(/\n/gim)
   textArr.forEach((item, index) => {
-    let node = new Text().text(item)
+    const node = new Text().text(item)
+    node.addClass('smm-text-node-wrap')
     this.style.text(node)
     node.y(
       fontSize * noneRichTextNodeLineHeight * index +