fix(tests): sync EXPECTED_CHILD_SECRETS with GLITCHTIP_DSN forwards (#1801)

post-ci-dispatcher.yml forwards GLITCHTIP_DSN to the auto-heal and
bernstein-ci-fix children so those workflows can emit error events when
their own runs fail. The matching test fixture in
EXPECTED_CHILD_SECRETS was not updated when the forward landed, so
test_dispatcher_calls_each_child[auto-heal] failed on the macOS test
matrix cell once recursive test discovery widened the gated set.

Update the two stale frozensets to match the workflow secrets block.

Author: chernistry

tests/unit/test_post_ci_dispatcher_yaml.py

@@ -39,8 +39,8 @@
 EXPECTED_CHILD_SECRETS: dict[str, frozenset[str]] = {
     "telegram-notify": frozenset({"TELEGRAM_BOT_TOKEN", "TELEGRAM_CHAT_ID"}),
     "auto-release": frozenset({"TELEGRAM_BOT_TOKEN", "TELEGRAM_CHAT_ID"}),
-    "auto-heal": frozenset({"TELEGRAM_BOT_TOKEN", "TELEGRAM_CHAT_ID"}),
-    "bernstein-ci-fix": frozenset({"GEMINI_API_KEY"}),
+    "auto-heal": frozenset({"TELEGRAM_BOT_TOKEN", "TELEGRAM_CHAT_ID", "GLITCHTIP_DSN"}),
+    "bernstein-ci-fix": frozenset({"GEMINI_API_KEY", "GLITCHTIP_DSN"}),
     "bisect-on-red": frozenset(),
 }