fix qwen2vl/qwen3vl video processor temporal padding when num_frames%temporal_patch_size!=1 (#42083)
* qwen3vl video process padding video frames
* add two video processor test cases
* fix typo
* down test image size
* fix qwen2vl video processor t padding
* delete padding when num_frames < temporal_patch_size
* to default format
* fix smart_resize in qwen3vl