[FEATURE] Improve test coverage for HuggingfaceTextEmbeddingTranslator.java

[dhrubo-os]

We need to improve test coverage in our repo.

This issue will target only to improve test coverage for HuggingfaceTextEmbeddingTranslator.java

From this url we can see where test coverage is missing for this class: https://app.codecov.io/gh/opensearch-project/ml-commons/blob/2.x/ml-algorithms%2Fsrc%2Fmain%2Fjava%2Forg%2Fopensearch%2Fml%2Fengine%2Falgorithms%2Ftext_embedding%2FHuggingfaceTextEmbeddingTranslator.java

[kmcarranza]

@dhrubo-os I would like to do this as a first project.

[dhrubo-os]

Sure, assigning to you.

[dhrubo-os]

@kmcarranza any update on this?

[kmcarranza]

@dhrubo-os Hello. I still working on this code and I hope to have something to push Monday. Thank you.

[dhrubo-os]

@kmcarranza any update on this issue?