fix(java): reload state before creating the initial Resolver

Author: nicklasl

openfeature-provider/java/src/main/java/com/spotify/confidence/FlagsAdminStateFetcher.java

@@ -32,7 +32,7 @@ class FlagsAdminStateFetcher {
   private final AtomicReference<ResolverStateUriResponse> resolverStateUriResponse =
       new AtomicReference<>();
   private final AtomicReference<Instant> refreshTimeHolder = new AtomicReference<>();
-  String accountId;
+  String accountId = "";
 
   public FlagsAdminStateFetcher(
       ResolverStateServiceGrpc.ResolverStateServiceBlockingStub resolverStateService,

openfeature-provider/java/src/main/java/com/spotify/confidence/LocalResolverServiceFactory.java

@@ -63,6 +63,8 @@ private static FlagResolverService createFlagResolverService(
     final HealthStatus healthStatus = new HealthStatus(healthStatusManager);
     final FlagsAdminStateFetcher sidecarFlagsAdminFetcher =
         new FlagsAdminStateFetcher(resolverStateService, healthStatus, token.account());
+    // Perform initial reload to fetch state and set accountId before creating resolver
+    sidecarFlagsAdminFetcher.reload();
     final long pollIntervalSeconds = getPollIntervalSeconds();
     final var wasmFlagLogger = new GrpcWasmFlagLogger(apiSecret);
     final ResolverApi wasmResolverApi =