Previously, when a downgraded component was destroyed in a way that did
not trigger the `$destroy` event on the element (e.g. when a parent
element was removed from the DOM by Angular, not AngularJS), the
`ComponentRef` was not destroyed and unregistered.
This commit fixes it by listening for the `$destroy` event on both the
element and the scope.
Fixes#22392
PR Close#22400
Previously, when using a different property/attribute name for an upgraded
component's binding (e.g. `bindings: {propName: '<attrName'}`), the property and
attribute names were swapped (e.g. using `attrName` as the property name and
`propName` as the attribute name). This resulted in unexpected behavior.
This commit fixes this using the correct names for properties and attributes.
This only affects `upgrade/dynamic`. `upgrade/static` works correctly already.
Fixes#8856
PR Close#16128
George Kalpakas
Pete Bacon Darwin
Jason Aden