MAINT-8059 New head attachment slots are not rendered invisible in mouselook

indra/newview/character/avatar_lad.xml

@@ -530,7 +530,7 @@
      location="ATTACH_FACE_JAW"
      position="0.000 0.000 0.000"
      rotation="0 0 0"
-     visible_in_first_person="true"/>
+     visible_in_first_person="false"/>
 
     <attachment_point
      id="48"
@@ -541,7 +541,7 @@
      location="ATTACH_FACE_LEAR"
      position="0.000 0.000 0.000"
      rotation="0 0 0"
-     visible_in_first_person="true"/>
+     visible_in_first_person="false"/>
 
     <attachment_point
      id="49"
@@ -552,7 +552,7 @@
      location="ATTACH_FACE_REAR"
      position="0.000 0.000 0.000"
      rotation="0 0 0"
-     visible_in_first_person="true"/>
+     visible_in_first_person="false"/>
 
     <attachment_point
      id="50"
@@ -563,7 +563,7 @@
      location="ATTACH_FACE_LEYE"
      position="0.000 0.000 0.000"
      rotation="0 0 0"
-     visible_in_first_person="true"/>
+     visible_in_first_person="false"/>
 
     <attachment_point
      id="51"
@@ -574,7 +574,7 @@
      location="ATTACH_FACE_REYE"
      position="0.000 0.000 0.000"
      rotation="0 0 0"
-     visible_in_first_person="true"/>
+     visible_in_first_person="false"/>
 
     <attachment_point
      id="52"
@@ -585,7 +585,7 @@
      location="ATTACH_FACE_TONGUE"
      position="0.000 0.000 0.000"
      rotation="0 0 0"
-     visible_in_first_person="true"/>
+     visible_in_first_person="false"/>
 
     <attachment_point
      id="53"