[NPU] Plugin batch - set performance_mode to THROUGHPUT (#32669)

### Details:
- If the model can be processed by the `PLUGIN` batch,
`performance_mode` should be set to `THROUGHPUT`.
- PR will be merged once validation is completed.

Author: DariaMityagina

src/plugins/intel_npu/src/plugin/src/plugin.cpp

@@ -701,14 +701,32 @@ std::shared_ptr<ov::ICompiledModel> Plugin::compile_model(const std::shared_ptr<
 
     std::shared_ptr<intel_npu::IGraph> graph;
 
+    auto compileWithConfig = [&](const auto& modelToCompile, const auto& config) {
+        if (!localConfig.get<WEIGHTLESS_BLOB>()) {
+            return compiler->compile(modelToCompile, config);
+        } else {
+            check_weightless_cache_attribute_occurrence(model);
+            return compiler->compileWS(modelToCompile, config);
+        }
+    };
+
     try {
         _logger.debug("performing compile");
 
-        if (!localConfig.get<WEIGHTLESS_BLOB>()) {
-            graph = compiler->compile(successfullyDebatched ? batchedModel : model->clone(), localConfig);
+        // Determine which model to use
+        auto modelToCompile = successfullyDebatched ? batchedModel : model->clone();
+
+        if (successfullyDebatched && localConfig.get<PERFORMANCE_HINT>() == ov::hint::PerformanceMode::LATENCY) {
+            _logger.info("Override performance mode to THROUGHPUT for compilation");
+
+            auto modifiedConfig = localConfig;  // Copy only when needed
+            std::stringstream strStream;
+            strStream << ov::hint::PerformanceMode::THROUGHPUT;
+            modifiedConfig.update({{ov::hint::performance_mode.name(), strStream.str()}});
+
+            graph = compileWithConfig(modelToCompile, modifiedConfig);
         } else {
-            check_weightless_cache_attribute_occurrence(model);
-            graph = compiler->compileWS(successfullyDebatched ? batchedModel : model->clone(), localConfig);
+            graph = compileWithConfig(modelToCompile, localConfig);  // No copy
         }
     } catch (const std::exception& ex) {
         OPENVINO_THROW(ex.what());

src/plugins/intel_npu/src/plugin/src/transformations.cpp

@@ -244,6 +244,7 @@ std::tuple<std::shared_ptr<ov::Model>, bool> handlePluginBatching(
         logger.info("Couldn't validate and reshape the model. Batching will be handled by compiler. Error: %s",
                     ex.what());
     }
+
     return {reshapedModel, successfullyDebatched};
 }