[Fix, Test] (DirectVulkan, ShaderTranspiler, TraceReplay): repair iterationRP's missing reduction barrier

Program 203 reuses prefixSumCache for a second subgroup reduction before every workgroup invocation has consumed the first result. Add a fingerprint-gated SPIR-V pass that inserts the missing Workgroup acquire-release barrier while preserving native subgroup operations.

Keep the repair opt-in behind MOBILEGL_ITERATIONRP_FIX_BARRIER, cover insertion, pass-through, and idempotence, and enable it together with the existing iterationRP subgroup repairs for the matching Linux and Android CI retraces.

android-plugin/app/src/trace/cpp/trace_replay_jni.cpp

@@ -122,6 +122,9 @@ Java_top_mobilegl_plugin_trace_TraceReplayActivity_nativeRunTraceReplay(JNIEnv*
                                                                         jboolean avoidAngleLlvmpipeSamplerMipmapMinFilter,
                                                                         jboolean avoidAngleLlvmpipeExplicitLodBias,
                                                                         jboolean coherentAsFlush,
+                                                                        jboolean fixIterationRPSubgroupScratch,
+                                                                        jboolean deriveNumSubgroups,
+                                                                        jboolean iterationRPFixBarrier,
                                                                         jstring texture2dDumps) {
     mobilegl_trace::Request request;
     request.tracePath = ToString(env, tracePath);
@@ -150,6 +153,9 @@ Java_top_mobilegl_plugin_trace_TraceReplayActivity_nativeRunTraceReplay(JNIEnv*
         avoidAngleLlvmpipeSamplerMipmapMinFilter == JNI_TRUE;
     request.avoidAngleLlvmpipeExplicitLodBias = avoidAngleLlvmpipeExplicitLodBias == JNI_TRUE;
     request.coherentAsFlush = coherentAsFlush == JNI_TRUE;
+    request.fixIterationRPSubgroupScratch = fixIterationRPSubgroupScratch == JNI_TRUE;
+    request.deriveNumSubgroups = deriveNumSubgroups == JNI_TRUE;
+    request.iterationRPFixBarrier = iterationRPFixBarrier == JNI_TRUE;
 
     ScopedTraceReplayState replayState;
     mobilegl_trace_set_requested_size(request.width, request.height);