[REF] web_editor: loader split the loading and the creation of wysiwyg

Before this commit, the wysiwyg loader had only one method to both load and create it.

After this commit, it has two separate methods to do it. This is practical if one wants to load
in some other context, like studio

closes odoo/odoo#72454

Related: odoo/enterprise#19139
Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>

addons/web_editor/static/src/js/frontend/loader.js

@@ -7,6 +7,11 @@ let wysiwygPromise;
 
 const exports = {};
 
+function loadWysiwyg(additionnalAssets=[]) {
+    return ajax.loadLibs({assetLibs: ['web_editor.compiled_assets_wysiwyg', ...additionnalAssets]}, undefined, '/web_editor/public_render_template');
+}
+exports.loadWysiwyg = loadWysiwyg;
+
 /**
  * Load the assets and create a wysiwyg.
  *
@@ -16,7 +21,7 @@ const exports = {};
 exports.createWysiwyg = async (parent, options, additionnalAssets = []) => {
     if (!wysiwygPromise) {
         wysiwygPromise = new Promise(async (resolve) => {
-            await ajax.loadLibs({assetLibs: ['web_editor.compiled_assets_wysiwyg', ...additionnalAssets]}, undefined, '/web_editor/public_render_template');
+            await loadWysiwyg(additionnalAssets);
             // Wait the loading of the service and his dependencies (use string to
             // avoid parsing of require function).
             const stringFunction = `return new Promise(resolve => {