[Bug]: Get table failed in the unified catalog

[YesOrNo828]

What happened?

See how to reproduce.

Affects Versions

master

What engines are you seeing the problem on?

No response

How to reproduce

Executing the statements in the Flink SQL Client:

CREATE CATALOG unified_catalog WITH ('type'='unified', 'metastore.url'='...');

use catalog unified_catalog;

create catalog mem_catalog with('type'='generic_in_memory');

create table mem_catalog.`default`.datagen_table( a int, b varchar) with(  'connector'='datagen', 'number-of-rows'='1'");

select * from  mem_catalog.`default`.datagen_table;

Executing the query statement would occur the exception:

Caused by: com.netease.arctic.NoSuchTableException: Table: mem_catalog does not exist.
	at com.netease.arctic.CommonUnifiedCatalog.lambda$loadTable$2(CommonUnifiedCatalog.java:124)
	at java.util.Optional.orElseThrow(Optional.java:290)
	at com.netease.arctic.CommonUnifiedCatalog.loadTable(CommonUnifiedCatalog.java:124)
	at com.netease.arctic.flink.catalog.FlinkUnifiedCatalog.getTable(FlinkUnifiedCatalog.java:173)

Relevant log output

No response

Anything else

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct