[CI/Build] Add Model Tests for Qwen2-VL

[alex-jw-brooks]

• Adds tests for comparing the HF / vLLM outputs for Qwen2 VL for single image / multi-image / video using the default size factors
• Moves the runner_mm_key from the test VLMTestInfo -> CustomTestOptions and sets runner_mm_key for images for single/multi image / embedding tests, and videos for video tests

The tests added here work without issue and don't run into the long context issues that seem to be floating around for qwen2-vl models - we can add another custom inputs case for qwen2-vl for that case as we investigate.

Also, split up the VLM tests into standard and extended subsets. FIX #7439

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[DarkLight1337]

Thanks for adding the tests! I think we're about to hit the CI timeout though, can you split the tests into essential and non-essential groups similar to language-only models tests? We only need to test the following multi-modal models in CI:

• LLaVA w/ our implementation of CLIPEncoder
• PaliGemma w/ our implementation of SiglipEncoder
• Ultravox w/ HuggingFace's implementation of WhisperEncoder
• Qwen2-VL w/ M-ROPE usage

The rest of the tests can be run on demand like the extended language model tests.

[DarkLight1337]

Thanks for adding this!

[alex-jw-brooks]

No worries! Thanks for fixing the nightly label!