Fix Broken sample app (#103)

Summary:
With this fix the entire android setup builds with gradle ✨. To try out the sample app, run `./gradlew :sample:installDebug`
Closes https://github.com/facebook/Sonar/pull/103

Reviewed By: danielbuechele

Differential Revision: D8618622

Pulled By: priteshrnandgaonkar

fbshipit-source-id: 62a038f95c37cbadf48636a58ca222c8162e256e

android/sample/build.gradle

@@ -61,5 +61,4 @@ dependencies {
 
     implementation deps.okhttp3
     implementation project(':android')
-    implementation project(':fbjni')
 }

libs/fbjni/cxx/fbjni/detail/References.cpp

@@ -54,7 +54,10 @@ bool doesGetObjectRefTypeWork() {
 }
 
 bool isObjectRefType(jobject reference, jobjectRefType refType) {
-  static bool getObjectRefTypeWorks = doesGetObjectRefTypeWork();
+
+// TODO Rather than setting it true, use doesGetObjectRefTypeWork(). But it
+// causes sample app to freeze
+  static bool getObjectRefTypeWorks = true;
 
   return
     !reference ||