FIX: Fix unwanted subproperties

Summary

Fix for #196 (closed). The subproperties were set because one erroneous inheritance ALL instead of FIX in the end.

Focus

Properties should have the default (always?) inheritance FIX. Everything else would imply that the properties of the entity being added to the _Properties list inherit their properties depending on the importance. I don't see any reason why their should be an inheritance here at all, but that's beyond the scope of this MR.

Test Environment

New int test from https://gitlab.com/linkahead/linkahead-pyinttest/-/commit/15b2e3f153d733b5a94fd3bc0fbc9a3f0b6f99b5

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