[MergeDupsCompleted] Deleted word shows up as an empty word instead

[imnasnainaec]

To Reproduce

1. Open a project with a set of potential duplicates (e.g., two words with identical vernacular form)
2. Data Cleanup
3. Merge Duplicates
4. Delete all the senses of a word
5. Save & Continue
6. Data Cleanup
7. In right column (or bottom row) titled "You've completed:", click on the first Merge Duplicates tile, with 'Number of merges completed: 1"
8. You see

[Word] -> [Empty word] (Undo Merge)

which is confusing.

Expected behavior

It should be something like:

[Word] was deleted. (Undo deletion)