[ENH] bump morph version to v3

[bhaktatejas922]

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[github-actions]

Reviewer Checklist

Please leverage this checklist to ensure your code review is thorough before approving

Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
• Have all non-obvious changes been commented?

System Compatibility

• Are there any potential impacts on other parts of the system or backward compatibility?
• Does this change intersect with any items on our roadmap, and if so, is there a plan for fitting them together?

Quality

• Is this code of a unexpectedly high quality (Readability, Modularity, Intuitiveness)

[propel-code-bot]

This pull request updates the default Morph embedding model version to morph-embedding-v3 across the codebase, replacing all prior references to morph-embedding-v2. The change is reflected in both Python and TypeScript implementations, as well as in tests and user-facing documentation. No other functional or API changes are introduced-only the default model and documentation configuration are updated to use the new Morph model version.

This summary was automatically generated by @propel-code-bot

[itaismith]

@bhaktatejas922 Are you able to update your branch? We just merged a fix that will allow all the PR checks to run for you.