[BUG] test reports as success when wrong metric is set

[bachng2017]

Describe the bug With current implement, when user set a wrong metric (type-missed or any reason), the test always succeed https://github.com/re-data/dbt-re-data/blob/main/macros/tests/test_metrics.sql#L6

Although it might be by-design feature but reporting the situation as a failure might be more intuitive.

Expected behavior Report the test as failure when wrong metric is set.

To Reproduce Run a test with not-existed. For example row_countx instead row_count

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