* Remove custom navigation in FileDialog and change Ok/Cancel to use AddButton
* Fix most tests
* Update drawing tests to use contents asserts instead
* Update positioning to be less absolute
* TableView to not swallow cursors if no selection change manifests
* Make SetSelection cleverer about how it decides selection changed
* Refactor TableView key handling/Tab to be simpler and faster
* Tests for TableView selection moving out
* Add test for TableView selection change swallow cursor
* Fix formatting
* Fix split container height when buttons have shadows
* Fix alignment of buttons and input boxes
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