Add more highlighter color choices (#7012)

* Add more highlighter color choices, closes #7011

* docs

shared/editor/queries/isList.ts

@@ -1,5 +1,12 @@
 import { Node, Schema } from "prosemirror-model";
 
+/**
+ * Check if a node is a list node.
+ *
+ * @param node The node to check
+ * @param schema The schema to check against
+ * @returns True if the node is a list node, false otherwise
+ */
 export function isList(node: Node, schema: Schema) {
   return (
     node.type === schema.nodes.bullet_list ||