fix: Raise error if list provided to StringOptions has duplicates and change validation errors to assertion errors for this field as well.

[ksbrar]

No description provided.

[tgaddair]

@ksbrar were you going to change these to asserts?

[ksbrar]

@tgaddair yes doing it now, was fixing other things

[github-actions]

Unit Test Results

       6 files  ±       0         6 suites  ±0   59m 13s ⏱️ + 37m 2s
2 485 tests +2 473  2 475 ✔️ +2 465    9 💤 +  7  1 ❌ +1 
7 455 runs  +7 395  7 425 ✔️ +7 377  27 💤 +15  3 ❌ +3 

For more details on these failures, see this check.

Results for commit dd59940. ± Comparison against base commit 531e024.

This pull request removes 4 and adds 2477 tests. Note that renamed tests count towards both.

tests.regression_tests.model.test_old_models ‑ test_model_loaded_from_old_config_prediction_works
tests.regression_tests.model.test_old_models ‑ test_predict_deprecated_model[respiratory]
tests.regression_tests.model.test_old_models ‑ test_predict_deprecated_model[titanic]
tests.regression_tests.model.test_old_models ‑ test_predict_deprecated_model[twitter_bots]

tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_image_augmentation[augmentation_pipeline_ops0]
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_image_augmentation[augmentation_pipeline_ops1]
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_image_augmentation[augmentation_pipeline_ops2]
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_invalid_augmentation_parameters[None]
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_invalid_augmentation_parameters[augmentation_pipeline_ops1]
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_invalid_augmentation_parameters[augmentation_pipeline_ops2]
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_invalid_augmentation_parameters[augmentation_pipeline_ops4]
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_invalid_augmentation_parameters[random_horizontal_flip]
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_load_model_with_augmentation_pipeline
tests.ludwig.augmentation.test_augmentation_pipeline ‑ test_local_model_training_with_augmentation_pipeline[preprocessing0-encoder0-False]
…

♻️ This comment has been updated with latest results.

[ksbrar]

@tgaddair Switched to assertions, please re-review if you would like.