[pgAdmin4][RM_2424]: Menu Items don't appear in tools menu for modules that are loaded using deps

Hi

*Issue:*

If modules are loaded without any node dependency(i.e: on page load), the
function 'create_menu' is called implicitly to generate menu items.

But when the modules are loaded when its dependent node expands, the
function 'create_menus' has to explicitly call after 'add_menus' from
respective module's template files.

This patch is dependent on patch 'load_modules_js_when_required.patch'

Please find attached patch and review.