[tests] Update rope_scaling configuration for tiny qwen-vl models

[kashif]

What does this PR do?

The tiny Qwen2.5-VL test model had mrope_section: [2] (only 1 element), but the Liger Kernel expects at least 2 elements:

• mrope_section[0]: temporal dimension split
• mrope_section[1]: height dimension split

Fixes CI failure in #4364

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[qgallouedec]

CI fix by increasing the LR for two tests