[EuiPopover] Fix popover returning focus to correct element (elastic#…

…4071)

* Move onclickoutside / onescape handling to focus-lock lib itself

* Get popover focus return functioning

* Fix lint issues & snapshots, re-enable clickOutsideDisables prop for EuiFocusTrap

* fix popover re-toggling when clicking its anchor

* Re-enable popover outside click and escape key detection when ownFocus is false

* Only call popover's closePopover callback when it is open

* Don't scroll back to a popover anchor when the popover closes

* Address unintentional changes to flyouts & color picker

* changelog

* revert changes to popover example, which had been made to augment testing

* Fix flyout's snapshot tests

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 **Bug fixes**
 
+- Fixed focus trap + `EuiPopover` bug which prevented the anchor from receiving focus when the popover closes ([#4071](https://github.com/elastic/eui/pull/4071))
+- Fixed focus trap error & performance impact when one focus trap is deactivated and another becomes enabled ([#4071](https://github.com/elastic/eui/pull/4071))
 - Fixed a condition in `EuiInMemoryTable` to avoid mistaken assignment of `sortName` ([#4138](https://github.com/elastic/eui/pull/4138))
 
 ## [`30.2.0`](https://github.com/elastic/eui/tree/v30.2.0)

src/components/basic_table/__snapshots__/in_memory_table.test.tsx.snap

@@ -359,7 +359,6 @@ exports[`EuiInMemoryTable behavior pagination 1`] = `
                       panelPaddingSize="none"
                     >
                       <EuiOutsideClickDetector
-                        isDisabled={true}
                         onOutsideClick={[Function]}
                       >
                         <div