Avoid decorating attributes when cursor is in range (#1805)

client/codemirror/attribute.ts

@@ -1,6 +1,9 @@
 import { syntaxTree } from "@codemirror/language";
 import { Decoration } from "@codemirror/view";
-import { decoratorStateField } from "./util.ts";
+import {
+  decoratorStateField,
+  isCursorInRange,
+} from "./util.ts";
 
 export function attributePlugin() {
   return decoratorStateField((state) => {
@@ -11,6 +14,9 @@ export function attributePlugin() {
         if (node.type.name !== "Attribute") {
           return;
         }
+        if (isCursorInRange(state, [node.from, node.to])) {
+          return;
+        }
 
         const attributeText = state.sliceDoc(node.from, node.to);