Revert "Remove print_hints from builtin_missing_argument and builtin_unknown_option"

Unfortunately print_hints was true *by default* - so for all builtins
that didn't pass it it would now be false instead.

This resulted in the trailer missing, which includes the line number
and context. So if you ran a script that includes `bind -M` the error
message would now just be "bind: -M: option requires an argument",
with no indication as to where.

This reverts commit 8a50d47a46.

tests/checks/syntax-error-location.fish

@@ -65,3 +65,11 @@ $fish -c 'echo {$,}'
 # CHECKERR: fish: Expected a variable name after this $.
 # CHECKERR: echo {$,}
 # CHECKERR: ^
+
+echo "bind -M" | $fish
+# CHECKERR: bind: -M: option requires an argument
+# CHECKERR: Standard input (line 1): 
+# CHECKERR: bind -M
+# CHECKERR: ^
+# CHECKERR: (Type \'help bind\' for related documentation)
+