Remove EmbeddingsList custom class

[austin-denoble]

Problem

The EmbeddingsList class was extremely complicated, and was written only to truncate lengthy output to the console for demonstration purposes.

The class was incorrectly extending Array<>, and mangling the data we were getting back from embed calls that included sparse details.

Solution

Remove the custom EmbeddingsList wrapper and tests and use the interface from the generated core. This means we'll actually get back what we're expecting, and we remove a complex, unwieldy chunk of code.

Before	After

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Infrastructure change (CI configs, etc)
• Non-code change (docs, etc)
• None of the above: (explain here)

Test Plan