`ExecutionContext` w/ information schema leaks catalogs

[crepererum]

Describe the bug
Catalog registered to ExecutionContext with an information schema are never freed due to a cyclic Arc chain.

To Reproduce
Steps to reproduce the behavior:

#[tokio::test]
async fn catalogs_not_leaked() {
    // the information schema used to introduce cyclic Arcs
    let ctx = ExecutionContext::with_config(
        ExecutionConfig::new().with_information_schema(true),
    );

    // register a single catalog
    let catalog = Arc::new(MemoryCatalogProvider::new());
    let catalog_weak = Arc::downgrade(&catalog);
    ctx.register_catalog("my_catalog", catalog);

    let catalog_list_weak = {
        let state = ctx.state.lock().unwrap();
        Arc::downgrade(&state.catalog_list)
    };

    drop(ctx);

    assert_eq!(Weak::strong_count(&catalog_list_weak), 0);
    assert_eq!(Weak::strong_count(&catalog_weak), 0);
}

Expected behavior
Memory is freed.

Additional context
Affects master branch at 58da15970dc0ec9e3c1c369fe89f6ba38e09d9c9.