Reproduction steps:
1. Open project “MyProject”
2. Open “Assets\stringtable\String Table (String Table Collection)”
3. Select “Open in Table Editor” through the Inspector
4. Add a couple of Entries with the “Add New Entry” button
5. Check the “Smart” box on all of the created entries
6. Delete all created entries
7. Enter “Edit Table Metadata” and observe the “English (en)\Metadata\Smart Format Tag\Entries” dropdown

Expected result: shows 0 Entires - erasing a table entry automatically removes associated shared metadata.
Actual result: shows 3 Entries - erasing a table entry does not remove associated shared metadata.

Reproducible with: 1.3.2, 1.4.2 (2020.3.44f1, 2021.3.16f1, 2022.2.3f1, 2023.1.0a26)

Reproducible on: macOS Catalina 10.15.7 (Intel)