I18n: Disambiguate "Light"

"Light" already has multiple contexts, but some were missing:
- In general, "Light" refers to a Blender Light object. In many cases,
  this comes from an `id_type` enum, already using the ID context. Use
  it also for properties that were missing that context.
- In the context of render passes, "Light" is the actual illumination
  factor, not the light emitor. A new "Render Layer" translation
  context is introduced for this purpose as no existing ones are both
  specific and explicit enough.

Issue reported by Hoang Duy Tran.

scripts/startup/bl_operators/wm.py

@@ -1562,6 +1562,7 @@ class WM_OT_properties_edit(Operator):
     id_type: EnumProperty(
         name="ID Type",
         items=rna_id_type_items,
+        translation_context=i18n_contexts.id_id,
         default='OBJECT',
     )
 
@@ -2764,6 +2765,7 @@ class WM_OT_batch_rename(Operator):
             ('SCENE', "Scenes", ""),
             ('BRUSH', "Brushes", ""),
         ),
+        translation_context=i18n_contexts.id_id,
         description="Type of data to rename",
     )