Is this a new bug?

• I believe this is a new bug
• I have searched the existing issues, and I could not find an existing issue for this bug

Which packages are affected?

• dbt-adapters
• dbt-tests-adapter
• dbt-athena
• dbt-athena-community
• dbt-bigquery
• dbt-postgres
• dbt-redshift
• dbt-snowflake
• dbt-spark

Current Behavior

The existing_relation set here is always None

Expected Behavior

The existing_relation during the function materialization shouldn't be None if the function exists.

Steps To Reproduce

1. add {{ log('function relation: ' ~ load_cached_relation(this), info=True) }} to a function
2. build the function twice
3. observe that it is always logged as none

Relevant log output

Environment

- OS:
- Python:
- dbt-adapters:
- <adapter>:

Additional Context

No response