vim-patch:8.2.5019: cannot get the first screen column of a character (#23312)

Problem:    Cannot get the first screen column of a character.
Solution:   Let virtcol() optionally return a list. (closes vim/vim#10482,
            closes vim/vim#7964)

0f7a3e1de6

Co-authored-by: LemonBoy <thatlemon@gmail.com>

src/nvim/eval.lua

@@ -436,7 +436,7 @@ return {
     undotree={},
     uniq={args={1, 3}, base=1},
     values={args=1, base=1},
-    virtcol={args=1, base=1},
+    virtcol={args={1, 2}, base=1},
     virtcol2col={args=3, base=1},
     visualmode={args={0, 1}},
     wait={args={2,3}},