Indexes that have been dropped cannot be recreated

[czpmango]

Describe the bug (required)
Indexes that have been dropped cannot be recreated(possibly due to the existence check mechanism for composite indexes)

Your Environments (required)
Version: v2.0.1/.../v2.6.0

How To Reproduce(required)

create space test(vid_type=Fixed_string(30));
use test;
create tag recinfo(name string,tm bool,id int);
insert vertex recinfo(name,tm,id) values "r1":("czp",true,1);
create tag index recinfo_index on recinfo();
create tag index recinfo_name_index on recinfo(name(8));
create tag index recinfo_multi_index on recinfo(name(8),tm,id);
show tag indexes;
drop tag index recinfo_name_index;
create tag index recinfo_name2_index on recinfo(name(8));

Expected behavior
Allow index recreation.

Additional context
Explicitly specifying index names should be disabled.

[czpmango]

From https://discss.nebula-graph.com.cn/t/topic/6440/16