Add sh_binary dependencies to primary abi of the target

If compile_multilib is set to 'both' for an apex having a sh_binary
dependency for which compile_multilib is not set, then the sh_binary
dependency should be added for the primary ABI of the target

Bug: 325628733,326985291
Test: m
Change-Id: Ie9cd12d49f6854c33af3724cb8e2fc3d8b7627a0

apex/apex_test.go

@@ -5046,6 +5046,7 @@ func TestApexWithShBinary(t *testing.T) {
 			key: "myapex.key",
 			sh_binaries: ["myscript"],
 			updatable: false,
+			compile_multilib: "both",
 		}
 
 		apex_key {