fix(go): gracefully handle go fmt failures during generation

[jsklan]

Description

Refs: Discussion in #sdk-dev about Go SDK generation failures when go fmt encounters issues

When generating Go SDKs, if go fmt fails (e.g., due to .fernignore issues or other compilation problems), the entire generation would fail, preventing developers from seeing the generated output for debugging purposes.

This PR changes the behavior to gracefully handle go fmt failures by logging a warning and continuing to output the generated files.

Link to Devin run: https://app.devin.ai/sessions/cbb28720e3c14b2da2e8dc88d8caffdd
Requested by: @jsklan

Changes Made

• Wrapped the go fmt execution in a try-catch block in GoProject.ts
• When go fmt fails, logs a warning message instead of throwing an error
• Files are still written to disk even if formatting fails
• Added changelog entry for version 1.22.5

Testing

• Lint checks pass (pnpm run check)
• Unit tests added/updated (no new tests - behavior change is straightforward)
• Manual testing completed (not tested with actual failing go fmt scenario)

Human Review Checklist

• Verify the warning message is clear and actionable
• Consider if this behavior should be configurable (current implementation always continues on failure)
• Note: Users who want strict compilation guarantees should add go build ./... as a CI step in their SDK repo

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