Fix toml build errors in Bun.build()

[pfgithub]

What does this PR do?

Line text was not being cloned and then was freed before use

alternative solution: do the same thing bundle_v2 getAST .css does ← this doesn't work

[robobun]

^{Updated 11:44 PM PT - Feb 21st, 2025}

❌ @pfgithub, your commit 5a58aec has 10 failures in Build #12075:

• test/js/bun/spawn/spawn-stream-serve.test.ts - 1 failing on 🍎 13 x64
• test/js/bun/s3/s3-insecure.test.ts - 1 failing on 🍎 13 x64
• test/js/bun/plugin/plugins.test.ts - 1 failing on 🍎 13 x64
• test/js/bun/net/tcp-server.test.ts - timeout on 🍎 13 x64
• test/js/bun/http/serve-body-leak.test.ts - 3 failing on 🐧 3.20 x64
• test/js/bun/http/serve-body-leak.test.ts - 3 failing on 🐧 3.20 x64-baseline
• test/js/bun/http/serve.test.ts - timeout on 🍎 13 x64
• test/js/web/fetch/fetch.test.ts - 1 failing on 🍎 13 aarch64
• test/cli/install/bun-install-registry.test.ts - 1 failing on 🪟 2019 x64
• test/cli/install/bunx.test.ts - annotation error on 🍎 14 aarch64
• test/cli/create/create-jsx.test.ts - 6 failing on 🍎 14 aarch64
• test/cli/create/create-jsx.test.ts - 6 failing on 🍎 13 aarch64
• test/cli/create/create-jsx.test.ts - 6 failing on 🪟 2019 x64-baseline
• test/cli/create/create-jsx.test.ts - 6 failing on 🪟 2019 x64
• test/cli/create/create-jsx.test.ts - 6 failing on 🍎 14 x64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 22.04 aarch64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 24.04 aarch64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 12 aarch64
• test/cli/create/create-jsx.test.ts - 6 failing on 🍎 13 x64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 20.04 aarch64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 3.20 aarch64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 22.04 x64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 24.04 x64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 20.04 x64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 12 x64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 24.04 x64-baseline
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 22.04 x64-baseline
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 12 x64-baseline
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 20.04 x64-baseline
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 3.20 x64
• test/cli/create/create-jsx.test.ts - 6 failing on 🐧 3.20 x64-baseline

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🧪   try this PR locally:

bunx bun-pr 17473