Add correct_bond_type_of_loaded_devices flag

Bug: 319530790
Bug: 315241296
Test: m .
Change-Id: I16783b54983e4b513c9cd3cdfc122ff341a7823c

flags/security.aconfig

+package: "com.android.bluetooth.flags"
+
+flag {
+    name: "correct_bond_type_of_loaded_devices"
+    namespace: "bluetooth"
+    description: "Mark the bond type of loaded device as persistent"
+    bug: "319530790"
+}
+