* Use a block widget for top padding
* Update review panel positions when the editor geometry changes
* Remove editorPaddingTop from position calculations
* Recalculate review panel on start adding comment
* Assert on line content rather than index
* Use broadcastChange
* Keep focus in the editor when opening the review panel
* debounce broadcastChange
* Set CULL_AFTER to Infinity
GitOrigin-RevId: a8d7b8967736a9164b5264eeaadf334c15ec95ce