Fix #106849: Sculpt Edit Voxel Size text too big (applies UI scale twice)

There has already been some work on the placement/size of the text
displayed by the Edit Voxel Size operator (see b65ab29310 &
0c98bb75cb), so it already sets up a suiting matrix in
`VoxelSizeEditCustomData` > `text_mat`. This includes having called
`ED_view3d_pixel_size` and this takes into account the UI resolution
scale already afaict.

So in order to resolve, just remove the multiplication by UI_SCALE_FAC.

Fixes #106849

Pull Request: https://projects.blender.org/blender/blender/pulls/131093

source/blender/editors/object/object_remesh.cc

@@ -333,7 +333,8 @@ static void voxel_size_edit_draw(const bContext *C, ARegion * /*region*/, void *
 
   GPU_matrix_push();
   GPU_matrix_mul(cd->text_mat);
-  BLF_size(fontid, 10.0f * fstyle_points * UI_SCALE_FAC);
+  /* Resolution scale is already accounted for in 'text_mat'. */
+  BLF_size(fontid, 10.0f * fstyle_points);
   BLF_color3f(fontid, 1.0f, 1.0f, 1.0f);
   BLF_width_and_height(fontid, str, strdrawlen, &strwidth, &strheight);
   BLF_position(fontid, -0.5f * strwidth, -0.5f * strheight, 0.0f);