[Cerrado] Block title translation per post type with automatic translation

Background of the issue:
I am trying to prevent the title field from being translated for specific post types using automatic translation in WPML, regardless of the translation engine (PTC, DeepL, etc). Proper nouns and brand names should remain unchanged, such as 'Volkswagen Jetta' not being translated to 'People's Car Jet stream'. I attempted using wpml_tm_job_field_is_translatable and wpml_tm_translation_job_data, but they did not work as expected.

Symptoms:
The title field is being translated automatically for all post types, which is not desired for proper nouns and brand names.

Questions:
1. What is the correct filter/hook to exclude title translation per post type with automatic translation?
2. Does the approach differ between PTC and DeepL engines, and if so, what are the solutions for each?
3. Is there a plan to add a native feature for locking title translation per post type in WPML?