[Change]: [1.94.0] Add warn-by-default unused_visibilities lint for visibility on const _ declarations

[PLeVasseur]

Change description

Add warn-by-default unused_visibilities lint for visibility on const _ declarations

Area

const evaluation

Category

New content

FLS Paragraph ID

No response

Change description (extended)

Link to compiler PR:
Add warn-by-default unused_visibilities lint for visibility on const _ declarations