android_app stl property bug fix

When it is set to c++_shared, the added dependency should be
libc++_shared, not libc++.

Fixes: 130891985
Test: app_test.go, atest 'CtsNdkBinderTestCases' w/ conversion CL
Change-Id: I0e50e0d5bf511aa6e52d16cd715a185721011255
diff --git a/java/app_test.go b/java/app_test.go
index 559afcc..ac40ece 100644
--- a/java/app_test.go
+++ b/java/app_test.go
@@ -1199,6 +1199,10 @@
 			compile_multilib: "both",
 			sdk_version: "current",
 		}
+
+		ndk_prebuilt_shared_stl {
+			name: "ndk_libc++_shared",
+		}
 		`)
 
 	testCases := []struct {
@@ -1208,7 +1212,7 @@
 		{"stl",
 			[]string{
 				"libjni.so",
-				"libc++.so",
+				"libc++_shared.so",
 			},
 		},
 		{"system",