Micon Menu breaks Simple Mega Menu (removes reference on node save)

Problem/Motivation

Using micon_menu in combination with https://www.drupal.org/project/simple_megamenu → caused the following issue: #3298743: Incompatible with micon_menu: Removes MegaMenu reference on node save →

The reason is that both modules use menu_link's ->option value:

$menu_link_options = $menu_link->link->first()->options;

micon_menu replaces a lot of the core logic. When saving a node with a menu item that refers to a mega menu, the reference is deleted on node save and the mega menu is no more referenced.

Steps to reproduce

Create a node with its menu item. No icon selection required.
Select a mega menu on that menu item by Structure > Menu > ...
Edit the node and save it. You don't have to set an icon, save is enough without any changes
See the selected mega menu is no more referenced / selected on the menu item.

Proposed resolution

Review the implementation in https://git.drupalcode.org/project/micon/-/blob/2.x/modules/micon_menu/m... and ensure it doesn't override other options.

Remaining tasks

User interface changes

API changes

Data model changes