Revert "Return an empty list from get_property on an empty collection"

[akashlevy]

Reverts #80

[greptile-apps]

Greptile Summary

Reverts the empty-collection behavior previously added to get_property, restoring the null-object error and removing its dedicated regression coverage.

• Restores Error 2200 for empty get_property object arguments.
• Removes the empty-collection test fixture and regression registration.

Confidence Score: 5/5

The PR appears safe to merge as the restored behavior is the explicit purpose of this revert and no separate actionable defect was identified.

The implementation, help text, and regression suite are consistently restored to the pre-change behavior described by the PR.

Important Files Changed

Filename	Overview
tcl/Property.tcl	Restores the prior null-object error and removes documentation promising empty-list results for empty collections.
test/get_property_empty.tcl	Removes the reverted behavior’s dedicated Tcl regression test.
test/regression_vars.tcl	Removes the deleted test from the public regression suite.

_{Reviews (1): Last reviewed commit: "Revert "Return an empty list from get_pr..." | Re-trigger Greptile}