[UX-Feature] Use (`ctrl` +) `enter` to confirm and `escape` to cancel to dialgs

[putzwasser]

Description

Whenever a dialog is open, hitting enter would confirm it and escape would close it. Some examples:

Node Copy dialog

enter would confirm pasting below the currently selected node, escape would cancel the dialog/pasting.

Pending changes in property editor dialog

enter would apply the changes, escape would mean continue editing, and shift/ctrl + enter would mean: throw away

EDIT: escape already works, but it has a bug. You need to click into the dialog before escape closes it.

[mhsdesign]

moved to https://github.com/neos/neos-ui/issues/3100