Track the UID sidecars for the new DamageEvent and test-harness scripts

These .gd files were committed earlier without their generated .uid siblings; the
repo tracks .uid everywhere else, so commit them too and stop each machine
regenerating (and churning) the resource UIDs.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Pq1VX2o1ZfiNRdCjD294wf

damage_event.gd.uid

@@ -0,0 +1 @@
+uid://cwnr3ggsrii76

tests/damage_pipeline_test.gd.uid

@@ -0,0 +1 @@
+uid://cocj1seaa6a1

tests/harness_selftest.gd.uid

@@ -0,0 +1 @@
+uid://d1d4im32ox1ig

tests/test_helpers.gd.uid

@@ -0,0 +1 @@
+uid://c42s0wpu80st1