fix(review): strip ANSI from gh JSON output

[AaronZ345]

Summary

• Strip ANSI escape sequences from gh api JSON output before parsing.
• Apply the same decoding path to paginated NDJSON records used by nested API helpers.
• Add regression coverage for colorized JSON, arrays, and NDJSON records.

Root Cause

When gh emits colorized output, JSON parsing in the review helpers can fail because the raw payload contains ANSI control sequences. This can break review automation even though the underlying GitHub API response is valid JSON.

Fixes #10241.

Test Plan

• npm run test --workspace packages/cli -- src/commands/review/lib/gh.test.ts --pool threads --maxWorkers 1
• npx prettier --check packages/cli/src/commands/review/lib/gh.ts packages/cli/src/commands/review/lib/gh.test.ts

[qwen-code-ci-bot]

Qwen precheck requires maintainer approval before automated triage/review.

Head SHA: b444cd31e37bc82d45e4f3fc3700b7ca307ce604

Reason:

• prompt_injection:run_gh

A maintainer with write access can inspect the PR and manually request a run with @qwen-code /triage or @qwen-code /review. A new push requires a fresh precheck.