Fix: Workbench: Incomplete commit 5231f0c02a

The commit didn't include the other part of the fix and
included an invalid changed line.

source/blender/draw/engines/eevee/shaders/eevee_depth_of_field_accumulator_lib.glsl

@@ -428,7 +428,7 @@ void dof_gather_init(float base_radius,
   /* TODO(fclem) Seems like the default lod selection is too big. Bias to avoid blocky moving out
    * of focus shapes. */
   constexpr float lod_bias = -2.0f;
-  lod = max(floor(log2(base_radius * unit_sample_radius) + 1.0f) + lod_bias, 0.0f);
+  lod = max(floor(log2(base_radius * unit_sample_radius) + 0.5f) + lod_bias, 0.0f);
 
   if (no_gather_mipmaps) {
     lod = 0.0f;

source/blender/draw/engines/workbench/shaders/workbench_effect_taa_frag.glsl

@@ -21,7 +21,7 @@ void main()
       /* Clamp infinite inputs (See #112211). */
       color = clamp(color, float4(0.0f), float4(1e10f));
       /* Use log2 space to avoid highlights creating too much aliasing. */
-      color = log2(color + 0.5f);
+      color = log2(color + 1.0f);
 
       frag_color += color * samplesWeights[i];
     }