The `Surface Project` option for setting the 3d cursor location ignored
grease pencil geometry. Since grease pencil is now it's own object, separate
from annotations, it makes more sense to now consider grease pencil objects.
This changes the `V3D_DEPTH_NO_OVERLAYS` to also render grease pencil.
If grease pencil shouldn't be considered, the `V3D_DEPTH_NO_GPENCIL`
flag should be used instead.
Note that annotations are independent of the `eV3DDepthOverrideMode`.
It seems like they are always rendered according to
`drw_draw_show_annotation()`.
The description for the options in `eV3DDepthOverrideMode` is
updated to reflect that.
Resolves#122700.
Pull Request: https://projects.blender.org/blender/blender/pulls/122705
f1972deba1