arduinoFFT hash update

to fix the gh build, following latest dev.

platformio.ini

@@ -827,7 +827,7 @@ build_flags_S =
   ; -D WLED_ENABLE_DMX
 
 lib_deps_S =
-  https://github.com/kosme/arduinoFFT#develop @ 1.9.2+sha.e5e4c74 ; used for USERMOD_AUDIOREACTIVE - using "known working" hash
+  https://github.com/kosme/arduinoFFT#develop @ 1.9.2+sha.419d7b0 ; used for USERMOD_AUDIOREACTIVE - using "known working" hash
 
 build_flags_M = 
   -D WLED_MAX_USERMODS=25 ; default only 4-6, also for _XL configs takes 25 pointers in memory

usermods/audioreactive/audio_reactive.h

@@ -298,6 +298,7 @@ static float windowWeighingFactors[samplesFFT] = {0.0f};
 //#define FFT_SQRT_APPROXIMATION       // enables "quake3" style inverse sqrt                               - WLEDMM slower on ESP32
 #endif
 #define sqrt(x) sqrtf(x)             // little hack that reduces FFT time by 10-50% on ESP32 (as alternative to FFT_SQRT_APPROXIMATION)
+#define sqrt_internal sqrtf          // see https://github.com/kosme/arduinoFFT/pull/83
 #else
   // around 50% slower on -S2
 // lib_deps += https://github.com/blazoncek/arduinoFFT.git