Track vrcore_app SELinux denial

Bug: 118185801
Test: bug no. appears in the denial logs
Change-Id: Ib1d1bbbdf25e0e63ac8a7dec98aca08cafc3f870

private/bug_map

@@ -26,4 +26,5 @@ system_server sdcardfs file 77856826
 system_server storage_stub_file dir 112609936
 system_server zygote process 77856826
 usbd usbd capability 72472544
+vrcore_app mnt_user_file dir 118185801
 zygote untrusted_app_25 process 77925912