feat: Argument to select moved block in `moveBlocksUp/Down` (BLO-907) (#2723)

* Added decoration to `TrailingNodeExtension` to hide trailing block when editor is read-only

* Added optional argument to `moveBlocksUp/Down` to select block to move + tests

* Updated docs

* Revert "Added decoration to `TrailingNodeExtension` to hide trailing block when editor is read-only"

This reverts commit 086beeb97d6f6959c8a3c434dee4014df737e9b5.

* Added edge case handling + tests for columns

* Updated tests