Steps to reproduce:

1. Create a project
2. Window -> Package Management -> Package Manager
3. Click “” and select “Create package”
4. Enter the package name and click “Create”
5. Select the newly created package for it to appear in the Inspector window
6. Close the "Package Manager" window
7. Click the “Edit” button in the “Inspector” window
8. Find the "Dependencies" section and click "" under it
9. Remove by default displayed values from both fields
10. Add "123" to both fields
11. Save changes and observe the result in the Package Manager window

Actual results: A user gets an error "Package has invalid dependencies: 123: Version '123' is invalid. Expected a 'SemVer'compatible value."

Expected results:
"Package has invalid dependencies: 123: Version '123' is invalid. Expected a value that follows semantic versioning rules."

Reproducible with versions: 6000.3.0a6

Not reproducible with versions: -

Can’t test with versions: 6000.0.55f1, 6000.1.15f1, 6000.2.2f1, 6000.3.0a2 as package creation functionality landed just in 6000.3.0a3

Tested on (OS): M1 Max - Sequoia 15.6.1