Update docs for bun.lock

[pfgithub]

Updates docs for bun.lock being default

[robobun]

^{Updated 6:15 PM PT - Jan 21st, 2025}

❌ @pfgithub, your commit ddd69e5 has 3 failures in #10332:

• test/regression/issue/09041.test.ts - 1 failing on 🐧 22.04 aarch64
• test/regression/issue/09041.test.ts - 1 failing on 🐧 24.04 x64-baseline
• test/js/node/test/parallel/test-http-chunk-problem.js - code 1 on 🐧 3.20 x64
• test/js/node/test/parallel/test-http-chunk-problem.js - code 1 on 🐧 3.20 x64-baseline
• test/cli/hot/hot.test.ts - timeout on 🪟 2019 x64
• test/cli/hot/hot.test.ts - timeout on 🪟 2019 x64-baseline
• test/cli/hot/hot.test.ts - timeout on 🐧 20.04 aarch64
• test/cli/hot/hot.test.ts - timeout on 🐧 22.04 aarch64
• test/cli/hot/hot.test.ts - timeout on 🐧 12 aarch64
• test/cli/hot/hot.test.ts - timeout on 🐧 24.04 aarch64
• test/cli/hot/hot.test.ts - timeout on 🐧 3.20 aarch64
• test/cli/hot/hot.test.ts - timeout on 🐧 24.04 x64
• test/cli/hot/hot.test.ts - timeout on 🐧 22.04 x64
• test/cli/hot/hot.test.ts - timeout on 🐧 12 x64
• test/cli/hot/hot.test.ts - timeout on 🐧 20.04 x64
• test/cli/hot/hot.test.ts - timeout on 🐧 3.20 x64
• test/cli/hot/hot.test.ts - timeout on 🐧 22.04 x64-baseline
• test/cli/hot/hot.test.ts - timeout on 🐧 12 x64-baseline
• test/cli/hot/hot.test.ts - timeout on 🐧 20.04 x64-baseline
• test/cli/hot/hot.test.ts - timeout on 🐧 24.04 x64-baseline
• test/cli/hot/hot.test.ts - timeout on 🐧 3.20 x64-baseline
• test/cli/hot/hot.test.ts - timeout on 🍎 14 x64
• test/cli/hot/hot.test.ts - timeout on 🍎 13 x64
• test/cli/hot/hot.test.ts - timeout on 🍎 14 aarch64
• test/cli/hot/hot.test.ts - timeout on 🍎 13 aarch64

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🧪   try this PR locally:

bunx bun-pr 16585

[nektro]

this change may be inaccurate but the rest lgtm

[pfgithub]

bun init -y
bun install --yarn
ls
  bun.lock
  yarn.lock

Seems accurate

[nektro]

this bunfig option only makes --yarn default to on? ah my mistake then. assumed it might interact with bun bun.lockb in some way