Fix #128087: EEVEE: Position render pass not in viewport shading panel

Adds Position Render pass to Render Pass enum in Viewport Shading popup for EEVEE.

Pull Request: https://projects.blender.org/blender/blender/pulls/128136

source/blender/makesrna/intern/rna_space.cc

@@ -464,6 +464,7 @@ static const EnumPropertyItem rna_enum_view3dshading_render_pass_type_items[] =
     {EEVEE_RENDER_PASS_VOLUME_LIGHT, "VOLUME_LIGHT", 0, "Volume Light", ""},
 
     RNA_ENUM_ITEM_HEADING(N_("Data"), nullptr),
+    {EEVEE_RENDER_PASS_POSITION, "POSITION", 0, "Position", ""},
     {EEVEE_RENDER_PASS_NORMAL, "NORMAL", 0, "Normal", ""},
     {EEVEE_RENDER_PASS_MIST, "MIST", 0, "Mist", ""},
     {EEVEE_RENDER_PASS_CRYPTOMATTE_OBJECT, "CryptoObject", 0, "CryptoObject", ""},