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.

wled00/FX.cpp

@@ -8410,7 +8410,7 @@ uint16_t mode_2Doctopus() {
     const uint8_t C_Y = rows / 2 + (SEGMENT.custom2 - 128)*rows/255;
     for (int x = xStart; x < xEnd; x++) {
       for (int y = yStart; y < yEnd; 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
       }
     }