Addressables.CheckForCatalogUpdates() always returns 0 when "Only update catalogs manually" is enabled

Steps to reproduce:
1. Open the attached “CheckForCatalogUpdates.zip” project
2. Open the “SampleScene” scene
3. Build Addressables (Window → Asset Management → Addressables → Groups → Build → New Build → Default Build Script)
4. Open two Terminal windows
5. Run ‘cd /<project_path>/ServerData’ on Terminal 1
6. Run ‘cd /<project_path>/ServerData/StandaloneOSX’ on Terminal 2
7. Start a local server on Terminal 1 by running ‘python3 -m http.server 8080’
8. Run 'curl http://localhost:8080/StandaloneOSX/catalog_0.1.0.hash’ on Terminal 2 and note the hash that is printed
9. Enter Play Mode and note that Catalogs to update prints 0
10. Edit the “Cube” prefab in any way so its marked dirty and save it
11. In the Addressables Groups window switch Play Mode Script to “Use Existing Build (OSX)”
12. Rebuild Addressables
13. Repeat step 8 and see that the hash has changed
14. Enter Play Mode
15. Observe the Console window

Actual result: Catalogs to update returns 0
Expected result: Catalogs to update returns 1

Reproducible with: 2.0.3 (2023.3.0a15), 3.0.0 (6000.6.0a5)
Not reproducible with: 1.29.0 (2023.3.0a15)

Reproducible on: macOS Sequoia 15.7.5 (M1 Max)
Not reproducible on: No other environments tested