Fix test_configuration_tie in FlaxEncoderDecoderModelTest (#14076)
Fix test_configuration_tie in FlaxEncoderDecoderModelTest (#14076)

* check test_configuration_tie

* Fix test_configuration_tie

* make test slow again

* Remove property and use model.module.bind

* revert to slow test

Co-authored-by: ydshieh <b8b5afdcc4de58b54ce28738b50f86ec989da691@users.noreply.github.com>
huggingface/transformers,huggingface/transformers,huggingface/transformers,huggingface/transformers