Add ortb blocking module functional tests for video & audio battr

[osulzhenko]

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🔧 Type of changes

• [ ] new bid adapter
• [ ] update bid adapter
• [ ] new feature
• [ ] new analytics adapter
• [ ] new module
• [ ] bugfix
• [ ] documentation
• [ ] configuration
• [x] tech debt (test coverage, refactorings, etc.)

✨ What's the context?

What's the context for the changes? Are there any

🧠 Rationale behind the change

Why did you choose to make these changes? Were there any trade-offs you had to consider?

🧪 Test plan

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🏎 Quality check

• [ ] Are your changes following our code style guidelines?
• [ ] Are there any breaking changes in your code?
• [ ] Does your test coverage exceed 90%?
• [ ] Are there any erroneous console logs, debuggers or leftover code in your changes?