fix(code-interpreter): preserve Result.data in JSON serialization

[YidaWeng]

Summary

• Fix Result.toJSON() in JS SDK to include data field when present (previously omitted entirely)
• Fix Execution.to_json() in Python SDK to preserve empty data objects (previously dropped due to truthiness check)
• Change Python formats() to use is not None check instead of truthiness for data

Test plan

• JS tests: Added 3 test cases for Result.toJSON with populated data, empty data, and undefined data
• Python tests: Added 3 test cases for Execution.to_json with populated data, empty data, and None data
• All existing tests pass
• format, lint, and typecheck pass

Example

// Before: data was omitted
const result = new Result({ text: 'table', data: { columns: ['answer'], rows: [[42]] } }, true)
JSON.stringify(result) // { text: 'table' }

// After: data is preserved
JSON.stringify(result) // { text: 'table', data: { columns: ['answer'], rows: [[42]] } }

# Before: empty data was dropped
result = Result(text='table', data={})
execution.to_json() # '{"results": [{"text": "table"}]}'

# After: empty data is preserved
execution.to_json() # '{"results": [{"text": "table", "data": {}}]}'

Fixes #1938

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🦋 Changeset detected

Latest commit: e590562

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@e2b/code-interpreter	Patch
@e2b/code-interpreter-python	Patch

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[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-10T05:34:01.936888Z	e590562	PR opened

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[YidaWeng]

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