Bug: "Merge Local Text Styles with Same Name" not working in Sketch 64
# Steps
- Select "Merge Local Text Styles with Same Name"
- Select styles that I want to merge
- Select "Merge"
- The dialog updates as if the process was successful, but the duplicated styles remain.

# Demo
- Screen capture: https://d.pr/v/yvd8pR
- Notes: Expected a success message to let me know that the process is underway
- Once the process is complete and there are no duplicates left to merge, the only action available to me is "Cancel". Maybe this should be a "Done" or "Close" button once the merge is complete — otherwise it just feels like I'm undoing the Merge process.