Fixed TestAccBundleDeployUcSchema test

[andrewnester]

Changes

It was failing because when schema.yml was removed, catalog: main option left set in the base pipeline definition in databricks.yml which lead to incorrect config (empty target schema)
#1413

Backend behaviour changed and DLT pipelines stopped to accept empty targets leading to the error which was ignored before.

Tests

--- PASS: TestAccBundleDeployUcSchema (41.75s)
PASS
coverage: 33.3% of statements in ./...
ok      github.com/databricks/cli/internal/bundle       42.210s coverage: 33.3% of statements in ./...

[github-actions]

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Trigger:
go/deco-tests-run/cli

Inputs:

• PR number: 1997
• Commit SHA: 9eda1d3ececb3b5149bb97117ac89f0efc0b7733

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[eng-dev-ecosystem-bot]

Test Details: go/deco-tests/12276830250

[pietern]

Can you include a PR link in the summary to where this was changed?

Was the failure triggered by a commit or by something changing on the backend?

[andrewnester]

Was the failure triggered by a commit or by something changing on the backend?

Yes, this is a backend change, no changes from CLI side were done