vim-patch:9.0.0409: #{g:x} was seen as a curly-braces expression

Problem:    #{g:x} was seen as a curly-braces expression.
Solution:   Do never see #{} as a curly-braces expression. (closes vim/vim#11075)
7c7e1e9b98

src/nvim/eval.c

@@ -4587,12 +4587,14 @@ static int dict_get_tv(char **arg, typval_T *rettv, int evaluate, bool literal)
   char *curly_expr = skipwhite(*arg + 1);
   char buf[NUMBUFLEN];
 
-  // First check if it's not a curly-braces thing: {expr}.
+  // First check if it's not a curly-braces expression: {expr}.
   // Must do this without evaluating, otherwise a function may be called
   // twice.  Unfortunately this means we need to call eval1() twice for the
   // first item.
-  // But {} is an empty Dictionary.
+  // "{}" is an empty Dictionary.
+  // "#{abc}" is never a curly-braces expression.
   if (*curly_expr != '}'
+      && !literal
       && eval1(&curly_expr, &tv, false) == OK
       && *skipwhite(curly_expr) == '}') {
     return NOTDONE;