🐛 Koenig - Fixed cursor jumping to title when pressing Up/Left on lis…

…t items

refs TryGhost/Ghost#9623
- update "exit cursor at top" logic so it doesn't look at the parent ListSection until the cursor has reached the first ListItem in a ListSection

lib/koenig-editor/addon/options/key-commands.js

@@ -195,7 +195,7 @@ export const DEFAULT_KEY_COMMANDS = [{
     str: 'UP',
     run(editor, koenig) {
         let {isCollapsed, head: {offset, section}} = editor.range;
-        let prevSection = section.isListItem ? section.parent.prev : section.prev;
+        let prevSection = section.isListItem && !section.prev ? section.parent.prev : section.prev;
 
         if (isCollapsed && (offset === 0 || section.isCardSection) && !prevSection) {
             koenig.send('exitCursorAtTop');
@@ -210,7 +210,7 @@ export const DEFAULT_KEY_COMMANDS = [{
 
         // trigger a closure action to indicate that the caret "left" the top of
         // the editor canvas if the caret is at the very beginning of the doc
-        let prevSection = section.isListItem ? section.parent.prev : section.prev;
+        let prevSection = section.isListItem && !section.prev ? section.parent.prev : section.prev;
         if (isCollapsed && (offset === 0 || section.isCardSection) && !prevSection) {
             koenig.send('exitCursorAtTop');
             return;