This fixes an issue with linking `@angular/platform-server`

…PI (#32751)

Removed deprecated FlatTreeControl, NestedTreeControl, MatTreeFlattener,
and MatTreeFlatDataSource from all mat-tree examples. Updated to use
the modern childrenAccessor pattern.

Fixes #31524

(cherry picked from commit 9055ac5)

Removes all our usages of `declare global`, because they appear to cause breakages with some recent tooling updates.

(cherry picked from commit d6cc784)

Fixes that a test is failing after some recent changes.

(cherry picked from commit a55b197)

See associated pull request for more information.

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In #31208 I converted a bunch of the shared stepper state to signals in order to resolve "changed after checked errors". I didn't do it for `linear` which ends up being used in a `computed` and results in the DOM sometimes being out of sync. These changes update `linear` to use signals under the hood.

Fixes #32964.

(cherry picked from commit a7fe128)

The slider was reading its direction once on init and one when it changes, however the initial read was too early which meant that the `dir` directive might not have received its value yet.

Fixes #32970.

(cherry picked from commit a7d5561)

…art (#33001)

Currently the sidenav sets its margin when the transition starts, however that might not happen if its interruped which can leave it in a broken state.

These changes switch to always dispatching the event.

Fixes #32992.

(cherry picked from commit ac39110)

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…33018)

Expands the type of `detectHoverCapability` to allow users to customize the logic.

(cherry picked from commit 236762f)

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