Issue 379: Designate and test core:hasFacet as an inverse-functional property

[ajnelson-nist]

This Pull Request resolves all requirements of Issue #379 .

Coordination

• [x] Pull request is against correct branch
• [x] Pull Request is in, or reverted to, Draft status before Solutions Approval vote has passed.
• [x] CI passes in UCO feature branch
• [x] CI passes in UCO current unstable branch (fa3da83)
• [x] CI passes in CASE current unstable branch tracking UCO's unstable as submodule (ea8a0ad) (This was not the precise commit introducing the review, but the unstable UCO state is incorporated before this point)
• [x] Impact on SHACL validation reviewed for CASE-Examples
• [x] Impact on SHACL validation remediated for CASE-Examples (N/A)
• [x] Impact on SHACL validation reviewed for casework.github.io
• [x] Impact on SHACL validation remediated for casework.github.io (N/A)
• [x] Solutions Approval vote logged on corresponding Issue

[ajnelson-nist]

Converting to Draft until Solutions Approval vote is logged.