Move automodel version split further up

[charisk]

This is a very small refactor that splits the code paths between automodel v1 and automodel v2 further up. I got the original generateModeledMethodsFromLlm method and copy pasted it, named one of the functions generateModeledMethodsFromLlmV1 and the other generateModeledMethodsFromLlmV2, then simply cleaned up the code to only to do v1 stuff in one generateModeledMethodsFromLlmV1 and v2 stuff in generateModeledMethodsFromLlmV2. I haven't any other significant changes.

The two code paths are about to diverge further, so having separate functions will make it easier to make changes to them independently. We could also jut get rid of V1 for now, but that seemed like a bigger change to take on right now.

Checklist

N/A:

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[starcke]

Looks great. I wanted to do that refactor, but got sidetracked with the actual implementation.