vim-patch:8.2.0815: maparg() does not provide enough information for mapset()

Problem:    maparg() does not provide enough information for mapset().
Solution:   Add "lhsraw" and "lhsrawalt" items.  Drop "simplified"
9c65253fe7

vim-patch:9.0.0127: unused variable

Problem:    Unused variable.
Solution:   Remove the variable. (closes vim/vim#10829)
e95f22f63a

test/functional/vimscript/map_functions_spec.lua

@@ -13,6 +13,7 @@ describe('maparg()', function()
 
   local foo_bar_map_table = {
       lhs='foo',
+      lhsraw='foo',
       script=0,
       silent=0,
       rhs='bar',
@@ -141,6 +142,7 @@ describe('maparg()', function()
     local function acmap(lhs, rhs)
       return {
         lhs = ac(lhs),
+        lhsraw = ac(lhs),
         rhs = ac(rhs),
 
         buffer = 0,