Multi source selection aware

[umattern]

Description

Please include a summary of the changes and the related issue and context.

Fixes #(issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

• Tests you ran

Test Configuration:

• datavault4dbt-Version:
• dbt-Version: cloud/core, version number
• dbt-adapter-Version:

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation or included information that needs updates (e.g. in the Wiki)