`wm_keymap_item_find_props()` finds the keyitem for respective operator. This function expects opcontext to be `WM_OP_EXEC/INVOKE_REGION_WIN`. Set operator_context to `INVOKE_REGION_WIN` in UI drawing code for pack island button, this will allow drawing shortcut key infront of the label. Pull Request: https://projects.blender.org/blender/blender/pulls/133298