Fixes internal drag and drop issue when saving the undo state.

[lksoft]

When a section of text is selected inside of a text node and then is dragged to another location in the editor, the text from the end of the original selection to the end of the paragraph is deleted when the move is performed. The reason is because when the undo state is being changed the resulting range (after the _getRangeAndRemoveBookmark()) is not used to reset the selection, which ends up selecting the rest of the paragraph and thus the move removes the whole selection. I made sure to only do this if the range comes from the selection, i.e. none was passed in.

Watch this in the video of the demo code, here:

ScreenFloat.Shot.of.Orion.on.2025-09-30.at.15-38-49.mov

[neilj]

Thanks. I've used your fix but added it as commit b1ca8bc as I needed to tweak a few things to match the project's code style and builds should be separate to the commits making changes to the source.