Add missing context settings

[omkar-334]

What does this PR do?

Fixes #12760

@toilaluan @DN6

I am doubtful of these remaining cases - (can be found using TODO-context comment)
src -

(calls:        2, wrapped:        1)
 src/diffusers/pipelines/unidiffuser/modeling_text_decoder.py:158:1
 src/diffusers/pipelines/unidiffuser/modeling_text_decoder.py:255:1

(calls:        2, wrapped:        1)
 src/diffusers/pipelines/stable_diffusion_3/pipeline_stable_diffusion_3.py:1065:1
 src/diffusers/pipelines/stable_diffusion_3/pipeline_stable_diffusion_3.py:1089:1

Examples

(calls:        2, wrapped:        1)
examples/community/pipeline_stable_diffusion_3_instruct_pix2pix.py:1182:1
examples/community/pipeline_stable_diffusion_3_instruct_pix2pix.py:1209:1

(calls:        2, wrapped:        1)
examples/community/pipeline_stg_hunyuan_video.py:755:1
examples/community/pipeline_stg_hunyuan_video.py:773:1

(calls:        3, wrapped:        2)
examples/community/pipeline_flux_semantic_guidance.py:1139:1
examples/community/pipeline_flux_semantic_guidance.py:1157:1
examples/community/pipeline_flux_semantic_guidance.py:1174:1

(calls:        3, wrapped:        2)
examples/community/pipeline_stg_wan.py:583:1
examples/community/pipeline_stg_wan.py:593:1
examples/community/pipeline_stg_wan.py:606:1