fix(material/sidenav): mark content as inert while open#33247
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Fixes that a content query for `MatDrawerContent` wasn't resolving `MatSidenavContent` in the sidenav container.
Even though we trap focus within the sidenav, it's still possible for users' focus to escape and go into the content that's hidden behind it. These changes mark the content as `inert` while a sidenav is open. Fixes angular#32805.
crisbeto
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ok7sai
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May 12, 2026
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Even though we trap focus within the sidenav, it's still possible for users' focus to escape and go into the content that's hidden behind it.
These changes mark the content as
inertwhile a sidenav is open.Also fixes one issue I found along the way which prevented queries from resolving the sidenav content.
Fixes #32805.