Empty block states in noise_provider does not cause validation to fail, causing crash

Summary
When noise_provider block state provider has empty states, it should cause pack validation to fail; currently it does not, instead causing a crash. (This issue exists in 1.20.6 as well.)

Steps to Reproduce

• Add the attached pack.
• Get a pair of boots with the enchantment test:noise.
• Wear it.

Expected Result
The data pack should fail to validate.

Actual Result
Game crashes.