Fix JS errors occurring during EnterKeyHandling in IE11. Curiously, the tests did not catch them. Fixes #17466.
fix stray global, refs #15097
fix ref to undefined "evt", refs #16323
Do not call _KeyNavMixin#_onFocus from Select#_onFocus

Fixes #17492.
test tabindex not set to -1 on focus, refs #17492
fix CSS when pressing Dialog close icon, fixes #17501