patch 8.2.0069: ETYPE_ is used for two different enums

Problem:    ETYPE_ is used for two different enums.
Solution:   Rename one to use EXPR_.
diff --git a/src/debugger.c b/src/debugger.c
index 5dfc54e..91ab5ee 100644
--- a/src/debugger.c
+++ b/src/debugger.c
@@ -939,7 +939,7 @@
 		}
 		else
 		{
-		    if (typval_compare(tv, bp->dbg_val, ETYPE_IS, FALSE) == OK
+		    if (typval_compare(tv, bp->dbg_val, EXPR_IS, FALSE) == OK
 			    && tv->vval.v_number == FALSE)
 		    {
 			typval_T *v;