Replacing Exception type from ValueError to ImportError (#9588)

I have restructured the code to ensure uniform handling of ImportError.
In place of previously used ValueError, I've adopted the standard
practice of raising ImportError with explanatory messages. This
modification enhances code readability and clarifies that any problems
stem from module importation.

@eyurtsev , @baskaryan 

Thanks

libs/langchain/langchain/vectorstores/meilisearch.py

@@ -21,7 +21,7 @@ def _create_client(
     try:
         import meilisearch
     except ImportError:
-        raise ValueError(
+        raise ImportError(
             "Could not import meilisearch python package. "
             "Please install it with `pip install meilisearch`."
         )