Support disabling unit tests

[tsturge]

Support config: disabled for unit tests. (#9109)

Also, when a model is disabled, disable the corresponding unit tests automatically. (#10540)

Problem

config: enabled: false

Solution

Check for the config: enabled variable while parsing the unit test. If it is set to false, mark the unit test as disabled.

Checklist

• [x] I have read the contributing guide and understand what's expected of me.
• [x] I have run this code in development, and it appears to resolve the stated issue.
• [x] This PR includes tests, or tests are not required or relevant for this PR.
• [x] 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.
• [x] This PR includes type annotations for new and modified functions.

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 71.42857% with 4 lines in your changes missing coverage. Please review.

Project coverage is 89.13%. Comparing base (dd77210) to head (56f2300). Report is 11 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #10831 +/- ## ========================================== - Coverage 89.19% 89.13% -0.07% ========================================== Files 183 183 Lines 23496 23508 +12 ========================================== - Hits 20958 20953 -5 - Misses 2538 2555 +17 ``` | [Flag](https://app.codecov.io/gh/dbt-labs/dbt-core/pull/10831/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs) | Coverage Δ | | |---|---|---| | [integration](https://app.codecov.io/gh/dbt-labs/dbt-core/pull/10831/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs) | `86.44% <71.42%> (-0.14%)` | :arrow_down: | | [unit](https://app.codecov.io/gh/dbt-labs/dbt-core/pull/10831/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs) | `62.11% <42.85%> (+0.02%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs#carryforward-flags-in-the-pull-request-comment) to find out more. | [Components](https://app.codecov.io/gh/dbt-labs/dbt-core/pull/10831/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs) | Coverage Δ | | |---|---|---| | [Unit Tests](https://app.codecov.io/gh/dbt-labs/dbt-core/pull/10831/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs) | `62.11% <42.85%> (+0.02%)` | :arrow_up: | | [Integration Tests](https://app.codecov.io/gh/dbt-labs/dbt-core/pull/10831/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs) | `86.44% <71.42%> (-0.14%)` | :arrow_down: |

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[devmessias]

I like this. Especially because the unit tests are now broken when we have ctx like vars inside the model. The way I was handling this was by commenting them out.