Fix XPENDING/XCLAIM race condition in standalone RESP2 mode (#4577)

* Fix XPENDING/XCLAIM race condition in standalone RESP2 mode

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: GilboaAWS <97948000+GilboaAWS@users.noreply.github.com>

Author: Copilot

java/integTest/src/test/java/glide/SharedCommandTests.java

@@ -7985,6 +7985,11 @@ public void xpending_xclaim(BaseClient client) {
         assertEquals(streamid_1, pending_results_extended[0][0]);
         assertEquals(consumer1, pending_results_extended[0][1]);
 
+        // Small delay to ensure all XCLAIM and XACK operations are fully processed
+        // This addresses a race condition in standalone RESP2 mode where the final
+        // XPENDING call might not see all expected pending messages immediately
+        Thread.sleep(5);
+
         pending_results_extended =
                 client
                         .xpending(