Track idmap selinux denial.

This should fix presubmit tests.

Bug: 72444813
Test: Built policy.
Change-Id: I5b8661b34c9417cd95cb0d6b688443dcbe0d1c0b

private/bug_map

@@ -9,3 +9,4 @@ hal_graphics_allocator_default unlabeled dir 70180742
 surfaceflinger unlabeled dir 68864350
 hal_graphics_composer_default unlabeled dir 68864350
 bootanim unlabeled dir 68864350
+idmap installd file 72444813