docs: More assorted docs fixes (#9304)
* Add missing prop descriptions to Card
* Fix blog videos playing full screen on iOS
* Fix Select Autocomplete example overflowing popover
* Fix S2 form button group alignment
* Fix some examples that were too wide on mobile
* Fix Toolbar separator styling
* Fix DatePicker horizontal scrolling
* Adjust Calendar cell size to fit in available space
* Fix long words in blog heading overflowing
e.g. Internationalization
* Fix Toast animation
* Remove beta preview badge
* Fix DatePicker anatomy
* Add ErrorBoundary around examples
* Ensure toc always updates after navigations
* Don't wrap prop defaults
