[@types/codemirror] Add boolean type to autoCloseBrackets option (#36323)

Currently definition for autoCloseBrackets doesn't allow boolean values, which
is wrong. Setting autoCloseBrackets to true enables autoclosing feature with
the default settings, as is visible in the source code of a demo on the
CodeMirror's official website: https://codemirror.net/demo/closebrackets.html

var editor = CodeMirror.fromTextArea(document.getElementById("code"), {autoCloseBrackets: true});

types/codemirror/addon/edit/closebrackets.d.ts

@@ -42,6 +42,6 @@ declare module "codemirror" {
          * By default, it'll auto-close ()[]{}''"", but you can pass it a string similar to that (containing pairs of matching characters),
          * or an object with pairs and optionally explode properties to customize it.
          */
-        autoCloseBrackets?: AutoCloseBrackets | string;
+        autoCloseBrackets?: AutoCloseBrackets | boolean | string;
     }
 }

types/codemirror/test/addon/edit/closebrackets.ts

@@ -4,3 +4,7 @@
 var myCodeMirror: CodeMirror.Editor = CodeMirror(document.body, {
     autoCloseBrackets: "()[]{}''\"\""
 });
+
+var myCodeMirror2: CodeMirror.Editor = CodeMirror(document.body, {
+    autoCloseBrackets: true
+});