Use proper bitshift for tonemap srgb flag in Forward+ renderer

Author: clayjohn

servers/rendering/renderer_rd/effects/tone_mapper.h

@@ -76,7 +76,7 @@ class ToneMapper {
 		TONEMAP_FLAG_USE_COLOR_CORRECTION = (1 << 3),
 		TONEMAP_FLAG_USE_FXAA = (1 << 4),
 		TONEMAP_FLAG_USE_8_BIT_DEBANDING = (1 << 5),
-		TONEMAP_FLAG_CONVERT_TO_SRGB = (1 << 7),
+		TONEMAP_FLAG_CONVERT_TO_SRGB = (1 << 6),
 	};
 
 	enum FlagsMobile {