Bug 1380674 - remove the ability to create directories in the content temp directory on macOS; r=haik

MozReview-Commit-ID: 8SDcDTqp2F5

--HG--
extra : rebase_source : e8094606e5a302db41f7d7fd22656b7e8697d549

security/sandbox/mac/SandboxPolicies.h

@@ -327,9 +327,7 @@ static const char contentSandboxRules[] = R"(
   (allow file-write-create
     (require-all
       (subpath appTempDir)
-      (require-any
-        (vnode-type REGULAR-FILE)
-        (vnode-type DIRECTORY))))
+      (vnode-type REGULAR-FILE)))
 
   ; bug 1382260
   ; We may need to load fonts from outside of the standard