Return value from dialog

[jwelmac]

Previous usage of Get.dialog allowed closing of the dialog using Get.back with an optional result. With the redesigned Get.dialog implementation Get.back will no longer close the dialog or return a value. Instead to close a dialog Get.closeOverlay or Get.backLegacy has to be used.

This PR introduces the ability to return a value when closing a dialog with Get.closeOverlay and introduces an alias method Get.closeDialog.

Solves #3122

Pre-launch Checklist

• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making or feature I am adding, or @jonataslaw said the PR is test-exempt.
• All existing and new tests are passing.

[jonataslaw]

Thanks for that!
My only concern is with the alias, it closes bottomsheets too.
But adding the result on pop looks nice!

[jwelmac]

Good catch.

I will add a line to limit it to dialogs only.

[chenjiangmin]

When will we merge this request

[jwelmac]

@jonataslaw
Any idea how soon this PR can be merged?