* Add index file to CombineColumns

* Add CombinColumnAction

* Add CombinColumnsAction to default and embedding modes

* Fix outdated --color-brand references

* Set up sequenced close handler in combine columns

* Allow outside clicks to happen when popover is not open

* Add e2e test for combine column shortcut

* Remove unused prop

* Rename file to match component name: CombineColumnsAction

* Simplify test assertion

* Set width on combine columns action

* Remove superflouous ? check