MDEV-35029 ASAN errors in Lex_ident<Compare_ident_ci>::is_valid_ident upon DDL...

MDEV-35029 ASAN errors in Lex_ident<Compare_ident_ci>::is_valid_ident upon DDL on table with vector index

in ALTER TABLE or CREATE TABLE LIKE, a create a copy of key->option_list,
because it can be extended later on the thd->mem_root, so it has
to be a copy

mysql-test/main/vector2.result

@@ -24,3 +24,18 @@ set global mhnsw_cache_size = 1048576;
 insert into t  values (2,x'00000000');
 drop table t;
 set global mhnsw_cache_size = default;
+#
+# MDEV-35029 ASAN errors in Lex_ident<Compare_ident_ci>::is_valid_ident upon DDL on table with vector index
+#
+create table t (a int, v blob not null, vector key (v) distance_function=euclidean);
+show create table t;
+Table	Create Table
+t	CREATE TABLE `t` (
+  `a` int(11) DEFAULT NULL,
+  `v` blob NOT NULL,
+  VECTOR KEY `v` (`v`) `distance_function`=euclidean
+) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
+set session mhnsw_max_edges_per_node = @@mhnsw_max_edges_per_node + 1;
+create table t2 like t;
+alter table t force;
+drop table t, t2;

mysql-test/main/vector2.test

@@ -31,3 +31,13 @@ insert into t  values (2,x'00000000');
 
 drop table t;
 set global mhnsw_cache_size = default;
+
+--echo #
+--echo # MDEV-35029 ASAN errors in Lex_ident<Compare_ident_ci>::is_valid_ident upon DDL on table with vector index
+--echo #
+create table t (a int, v blob not null, vector key (v) distance_function=euclidean);
+show create table t;
+set session mhnsw_max_edges_per_node = @@mhnsw_max_edges_per_node + 1;
+create table t2 like t;
+alter table t force;
+drop table t, t2;