Update dsp.cpp

Signed-off-by: Mateusz Kopciński <mateusz.kopcinski@swmansnion.com>

Author: msluszniak

packages/react-native-executorch/common/rnexecutorch/data_processing/dsp.cpp

@@ -15,7 +15,7 @@ namespace {
 std::vector<float> hannWindow(size_t size) { 
   std::vector<float> window(size); 
   for (size_t i = 0; i < size; i++) { 
-    window[i] = 0.5f * (1.0f - std::cosf(2.0f * pi_v<float> * static_cast<float>(i) / static_cast<float>(size)));
+    window[i] = 0.5f * (1.0f - std::cosf(2.0f * std::numbers::pi_v<float> * static_cast<float>(i) / static_cast<float>(size)));
   } 
   return window; 
 }