fix regression that disabled custom fpp color format in some platforms - #2623

        if (fbFormat == null) {
            // Determine optimal framebuffer format based on renderer capabilities
            fbFormat = getDefaultFrameBufferFormat(renderer);
        } else {
            // User requested a specific format → verify GPU support
            if (!isFormatSupported(fbFormat, renderer)) {
                Format fallback = getDefaultFrameBufferFormat(renderer);
                logger.warning("Requested framebuffer format " + fbFormat +
                        " not supported. Falling back to " + fallback);
                fbFormat = fallback;
            }
        }

    private Format getDefaultFrameBufferFormat(Renderer renderer) {
        Collection<Caps> caps = renderer.getCaps();
        if (caps.contains(Caps.PackedFloatTexture)) {
            return Format.RGB111110F;
        } else if (caps.contains(Caps.FloatColorBufferRGB)) {
            return Format.RGB16F;
        } else if (caps.contains(Caps.FloatColorBufferRGBA)) {
            return Format.RGBA16F;
        } else {
            return Format.RGB8;
        }
    }

    private boolean isFormatSupported(Format format, Renderer renderer) {
        Collection<Caps> caps = renderer.getCaps();
        switch (format) {
            case RGB111110F:
                return caps.contains(Caps.PackedFloatTexture);
            case RGB16F:
                return caps.contains(Caps.FloatColorBufferRGB);
            case RGBA16F:
                return caps.contains(Caps.FloatColorBufferRGBA);
            case RGB8:
                return true;
            default:
                return false;
        }
    }