`NavigationMenuContent` when `forceMount` has no `data-state` attribute when used with `NavigationMenuViewport`

[tholander]

Bug report

Current Behavior

Currently when you use NavigationMenuContent with forceMount and a NavigationMenuViewport, the data-state attribute is not set on NavigationMenuContent.

Expected behavior

I think the NavigationMenuContent should always have the data-state attribute set.

Reproducible example

CodeSandbox Template

Suggested solution

The data-state attribute should be pass to ViewportContentMounter in NavigationMenuContent

Additional context

Your environment

Software	Name(s)	Version
Radix Package(s)	@radix-ui/react-navigation-menu	1.2.14
React	n/a	19.2.0
Browser	Chrome	143.0.7499.170
Assistive tech	n/a
Node	n/a
npm/yarn/pnpm	npm	10.9.3
Operating System	MacOS	26.1