Track vendor_init SELinux denial.

This should help fix presubmit tests.

Bug: 77635294
Test: Built policy.
Change-Id: I884ee75106c055aa7eb7af9f373d18e828a9f4e9
(cherry picked from commit 1c81d19b818ca93b64b05ebeced80048da8c3233)
diff --git a/sepolicy/vendor/bug_map b/sepolicy/vendor/bug_map
new file mode 100644
index 0000000..f21b0fe
--- /dev/null
+++ b/sepolicy/vendor/bug_map
@@ -0,0 +1 @@
+vendor_init unlabeled dir 77635294