[5.0] - Fix API menus/site/items

[LadySolveig]

Summary of Changes

Fix for creating site menu item via API - 500: Internal Server Error

Testing Instructions

• Generate a token in your super user profile
• API Call (POST) for: api/index.php/v1/menus/site/items
  Body:
  {"title":"automated test site menu item","menutype":"main-menu","access":"1","parent_id":"1","publish_down":"","publish_up":"","published":"1","template_style_id":"0","toggle_modules_assigned":"1","toggle_modules_published":"1","type":"component","alias":"","link":"","aliasoption":"1"}

Actual result BEFORE applying this Pull Request

500: Internal Server Error

Expected result AFTER applying this Pull Request

Works

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

[bembelimen]

I have tested this item ✅ successfully on 0b7704b

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42782.}

[bembelimen]

Thx