When something is typed in search, it seems that "Show module hidden categories" can be clicked even in modules that have no categories or no hidden categories. Also, clicking it in a module that actually has hidden categories, doesn't show the categories when search is cleared.

Steps to reproduce:

• Create a project
• Add QtQuick3D module
• Hide "Animation" category in Default Components module
• Type "Animation" in search
• Right click on top of QtQuick Controls to open context menu
• -> "Show module hidden categories" is clickable even though module has no categories
• Right click on top of QtQuick3D module
• -> "Show module hidden categories" is clickable even though no categories in that module were hidden
• Right click on top of Default components
• Choose "Show module hidden categories"
• Clear search
• Animation category is still hidden