Fix openvino main export

[echarlaix]

Fix main_export for decoder models (which were exported twice : with /without past) as well as the resulting model file name which where wrongfully set for single models (SD and encoder/decoder models were not concerned). Also now the different OVModelForXxx classes all use main_export to export the model when needed

[HuggingFaceDocBuilderDev]

The documentation is not available anymore as the PR was closed or merged.

[helena-intel]

Thanks Ella! I noticed one issue with CausalLM export: when loading the model, I got the error "use_cachewas set toTruebut the loaded model only supportsuse_cache=False". During export I saw Overriding 2 configuration item(s) - use_cache -> True but it appears the model is exported without cache.

[echarlaix]

Thanks Ella! I noticed one issue with CausalLM export: when loading the model, I got the error "use_cachewas set toTruebut the loaded model only supportsuse_cache=False". During export I saw Overriding 2 configuration item(s) - use_cache -> True but it appears the model is exported without cache.

Thanks a lot for reporting it @helena-intel, could you share a code snippet for me to reproduce this ?

[echarlaix]

cc @eaidova

[helena-intel]

Thanks a lot for reporting it @helena-intel, could you share a code snippet for me to reproduce this ?

When I tried to reproduce it it did not occur, so I suppose it was a strange thing in my environment. Sorry for the false alarm!

[echarlaix]

When I tried to reproduce it it did not occur, so I suppose it was a strange thing in my environment. Sorry for the false alarm!

Thanks a lot for checking @helena-intel