[FIX] web_editor: prevent crash when inserting empty string

Before this commit, when unsing the function `insert()` with data being
an empty string, the function crashed but shouldn't.

task-2833740

X-original-commit: d44302550ddc027d4891ad04bf16c364e171e5ad
Part-of: odoo/odoo#89932

addons/web_editor/static/lib/odoo-editor/src/commands/commands.js

@@ -46,6 +46,9 @@ const TEXT_CLASSES_REGEX = /\btext-[^\s]*\b/g;
 const BG_CLASSES_REGEX = /\bbg-[^\s]*\b/g;
 
 function insert(editor, data, isText = true) {
+    if (!data) {
+        return;
+    }
     const selection = editor.document.getSelection();
     const range = selection.getRangeAt(0);
     let currentNode;