fix: skip framework/language prompts in BYOC flow

[notgitika]

Fixes #178

Description

• Remove framework and language selection steps from BYOC (Bring Your Own Code) flow
• These prompts are unnecessary since user's code already has framework/language baked in
• Show all model providers for BYO (instead of filtering by framework)

Related Issues

#178

Documentation PR

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Other (please describe):

Testing

How have you tested the change?

• I ran npm run test:all
• I ran npm run typecheck
• I ran npm run lint
• If I modified src/assets/, I ran npm run test:update-snapshots and committed the updated snapshots

Checklist

• I have read the CONTRIBUTING document
• I have added any necessary tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly
• I have added an appropriate example to the documentation to outline the feature, or no new docs are needed
• My changes generate no new warnings
• Any dependent changes have been merged and published

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[aidandaly24]

great change

[agentcore-cli-automation]

Reviewed the diff. This is a small, focused change: it removes the language/framework prompts from the BYO wizard and shows all model providers. I verified that mapByoConfigToAgent in useAddAgent.ts does not consume config.language or config.framework, and handleByoPath doesn't either — so the hardcoded 'Python'/'Strands' defaults in handleByoComplete are inert in the BYO path today. The diff correctly also drops Language/Framework from the confirm screen. No serious issues — looks good to merge (and it already is). 👍