ADAP-973: Fix issue where materialized views were being mapped as views in catalog queries

[mikealfare]

resolves #652, dbt-labs/dbt-core#8864

Problem

Materialized views show up as views in catalog queries.

Solution

• write a test demonstrating the issue
• update the catalog query to correctly assign type for materialized views

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX

[VersusFacit]

One nit. Otherwise, straightforward. May want to leave a comment about the case-when being a short circuit operation though. The important of that precedence of checking the view is materialized first could be lost without that context somewhere.

[mikealfare]

One nit. Otherwise, straightforward. May want to leave a comment about the case-when being a short circuit operation though. The important of that precedence of checking the view is materialized first could be lost without that context somewhere.

That's a good point. I chose instead to add the condition in the case statement. Let me know what you think.