The CDK listbox had a subscription to its model changes in the constructor which fires immediately due to the `startsWith` and which was attempting to sort the selected values when in multiple selection mode. The problem is that the options aren't available until `ngAfterContentInit` which was causing an error when we tried to do the sorting.

These changes move the change event subscription to `ngAfterContentInit` so that options are guaranteed to be defined when it fires.

Fixes #25611.

(cherry picked from commit 1b0265c)

Fixes that the CDK menu trigger and menu item were preventing the default action on enter and space key presses. Presumably this was done to avoid form submissions, but it can also prevent anchors from being used as menu items. These changes avoid submissions by setting the `type` attribute on `button` elements.

Fixes #25584.

(cherry picked from commit eae2620)

(cherry picked from commit aab7c68)

#25624)

Windows 11 has different built in high contrast themes which weren't being picked up by the detector.

Fixes #25580.

(cherry picked from commit c294a3a)

Currently the datepicker restores focus when the closing sequence starts, but in some cases that can cause focus to be lost. When the calendar view changes, we delay moving focus for a while in order to work around a VoiceOver issue. This means that if a closing sequence is kicked off while there's an in-progress view change, focus may end up being restored, then moved back into the calendar which then gets destroyed. This can be seen in the "Datepicker emulating a Year and month picker" example.

These changes resolve the issue by moving the focus restoration all the way to the end of the closing sequence.

Fixes #25564.

(cherry picked from commit 814ba1b)

…25602)

We had to temporarily disable the CircleCI orb command that helps
ensuring snapshot jobs do not conflict when running concurrently.

It seems like the CircleCI API has been fixed to no longer cause
issues with the Orb. This commit attempts to re-enable the command.

(cherry picked from commit fd9d326)