Add metric for sim status dialog

Bug: 36458278
Test: make RunSettingsRoboTests -j40
Change-Id: I3add0b8070856baffd11b975209d5c42a23015b9
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index faad49e..d138184 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -4666,6 +4666,11 @@
     // Tag FIELD_PERMISSION: Name of the permission revoked
     ACTION_PERMISSION_REVOKED = 1245;
 
+    // OPEN: Settings > System > About Phone > Sim status
+    // CATEGORY: SETTINGS
+    // OS: P
+    DIALOG_SIM_STATUS = 1246;
+
     // Add new aosp constants above this line.
     // END OF AOSP CONSTANTS
   }