Fixed case of R == G, following original conversion formula (#4383)

https://en.wikipedia.org/wiki/HSL_and_HSV#From_RGB

# Objective
Fixes #4382

## Solution

- Describe the solution used to achieve the objective above.
Fixed conversion formula to account for red and green component being max and equal
---

## Changelog
Fixed RGB -> HSL colorspace conversion

## Migration Guide


Co-authored-by: Francesco Giordana <fgiordana@netflix.com>

crates/bevy_render/src/color/colorspace.rs

@@ -72,9 +72,9 @@ impl HslRepresentation {
         let lightness = (x_max + x_min) / 2.0;
         let hue = if chroma == 0.0 {
             0.0
-        } else if red > green && red > blue {
+        } else if red == x_max {
             60.0 * (green - blue) / chroma
-        } else if green > red && green > blue {
+        } else if green == x_max {
             60.0 * (2.0 + (blue - red) / chroma)
         } else {
             60.0 * (4.0 + (red - green) / chroma)