Fix T95341: BGL renders incorrect color

Missing include statements of the gpu_shader_colorspace_lib.glsl in
various shaders ignored the target texture color space.

source/blender/gpu/shaders/gpu_shader_2D_smooth_color_frag.glsl

@@ -1,3 +1,5 @@
+#pragma BLENDER_REQUIRE(gpu_shader_colorspace_lib.glsl)
+
 #ifndef USE_GPU_SHADER_CREATE_INFO
 noperspective in vec4 finalColor;
 out vec4 fragColor;

source/blender/gpu/shaders/gpu_shader_3D_smooth_color_frag.glsl

@@ -1,3 +1,5 @@
+#pragma BLENDER_REQUIRE(gpu_shader_colorspace_lib.glsl)
+
 #ifndef USE_GPU_SHADER_CREATE_INFO
 in vec4 finalColor;
 out vec4 fragColor;

source/blender/gpu/shaders/gpu_shader_colorspace_lib.glsl

@@ -6,13 +6,13 @@
 uniform bool srgbTarget = false;
 #endif
 
-vec4 blender_srgb_to_framebuffer_space(vec4 color)
+vec4 blender_srgb_to_framebuffer_space(vec4 col)
 {
   if (srgbTarget) {
-    vec3 c = max(color.rgb, vec3(0.0));
+    vec3 c = max(col.rgb, vec3(0.0));
     vec3 c1 = c * (1.0 / 12.92);
     vec3 c2 = pow((c + 0.055) * (1.0 / 1.055), vec3(2.4));
-    color.rgb = mix(c1, c2, step(vec3(0.04045), c));
+    col.rgb = mix(c1, c2, step(vec3(0.04045), c));
   }
-  return color;
+  return col;
 }

source/blender/gpu/shaders/gpu_shader_flat_color_frag.glsl

@@ -1,3 +1,5 @@
+#pragma BLENDER_REQUIRE(gpu_shader_colorspace_lib.glsl)
+
 #ifndef USE_GPU_SHADER_CREATE_INFO
 flat in vec4 finalColor;
 out vec4 fragColor;

source/blender/gpu/shaders/gpu_shader_text_frag.glsl

@@ -1,3 +1,5 @@
+#pragma BLENDER_REQUIRE(gpu_shader_colorspace_lib.glsl)
+
 #ifndef USE_GPU_SHADER_CREATE_INFO
 flat in vec4 color_flat;
 noperspective in vec2 texCoord_interp;

source/blender/gpu/shaders/gpu_shader_uniform_color_frag.glsl

@@ -1,3 +1,4 @@
+#pragma BLENDER_REQUIRE(gpu_shader_colorspace_lib.glsl)
 
 #ifndef USE_GPU_SHADER_CREATE_INFO
 uniform vec4 color;

source/blender/gpu/shaders/infos/gpu_srgb_to_framebuffer_space_info.hh

@@ -24,4 +24,5 @@
 #include "gpu_shader_create_info.hh"
 
 GPU_SHADER_CREATE_INFO(gpu_srgb_to_framebuffer_space)
+    .push_constant(Type::BOOL, "srgbTarget")
     .define("blender_srgb_to_framebuffer_space(a) a");