patch 8.2.4145: confusing error when using name of import for a function

Problem:    Confusing error when using name of import for a function.
Solution:   Pass a flag to trans_function_name().
diff --git a/src/eval.c b/src/eval.c
index 2b145e1..9313c27 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -2072,7 +2072,7 @@
     // If "s" is the name of a variable of type VAR_FUNC
     // use its contents.
     s = deref_func_name(s, &len, &partial,
-			in_vim9script() ? &type : NULL, !evaluate, &found_var);
+		 in_vim9script() ? &type : NULL, !evaluate, FALSE, &found_var);
 
     // Need to make a copy, in case evaluating the arguments makes
     // the name invalid.