patch 8.2.2766: test failure

Problem:    Test failure.
Solution:   Add change to Vim9 compilation error message.
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 0ada441..6286114 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -6472,7 +6472,7 @@
 				goto theend;
 			    if (range)
 			    {
-				semsg(_(e_cannot_use_range_with_assignment_str),
+				semsg(_(e_cannot_use_range_with_assignment_operator_str),
 								    var_start);
 				return FAIL;
 			    }