Fix for Octopus on ESP32 C3

Apparently the C3 can not convert negative floats to uint8_t directly, casting it into an int first fixes it.

Author: DedeHai

wled00/FX.cpp

@@ -7610,7 +7610,7 @@ uint16_t mode_2Doctopus() {
     const int C_Y = (rows / 2) + ((SEGMENT.custom2 - 128)*rows)/255;
     for (int x = 0; x < cols; x++) {
       for (int y = 0; y < rows; y++) {
-        rMap[XY(x, y)].angle  = 40.7436f * atan2f((y - C_Y), (x - C_X));  // avoid 128*atan2()/PI
+        rMap[XY(x, y)].angle  = int(40.7436f * atan2f((y - C_Y), (x - C_X)));  // avoid 128*atan2()/PI
         rMap[XY(x, y)].radius = hypotf((x - C_X), (y - C_Y)) * mapp;      //thanks Sutaburosu
       }
     }