feat(scripts): add pr-await CI gate to collapse PR polling into one call (#2873)

Co-authored-by: nova28 <17953305+nova28@users.noreply.github.com>
Co-authored-by: Carlos Florencio <carlosmflorencio@gmail.com>

Makefile

@@ -560,6 +560,7 @@ test-scripts:
 	@printf "$(CYAN)Running script tests...$(RESET)\n"
 	@python3 .github/scripts/lint-action-pinning_test.py
 	@bash scripts/pr-state.test.sh
+	@bash scripts/pr-await.test.sh
 	@bash scripts/run-quiet.test.sh
 	@bash scripts/dev-prod-db-path.test.sh
 	@bash scripts/opencode-code-review.test.sh