fix(es/minifier): retain class evaluation semantics

[labor0-bot]

Description:

Preserve class evaluation when side-effect extraction would change implicit strict-mode behavior or skip superclass constructor/null validation. The extractor now retains classes with non-null heritage and declines sloppy-context assignments and deletions, while preserving safe extraction in strict, no-heritage, and extends null cases.

Add SWC-owned execution fixtures for static public/private/block assignments, heritage TypeErrors, valid controls, and static-call ordering. Add a patch changeset for swc_ecma_minifier and swc_core.

Related issue (if exists):

Closes #12309
Closes #12310

Testing:

• UPDATE=1 cargo test -p swc_ecma_minifier
• cargo test -p swc_ecma_minifier
• ./scripts/exec.sh
• cargo fmt --all
• cargo clippy -p swc_ecma_minifier --all-targets -- -D warnings

Unavailable: git submodule update --init --recursive is disabled by the runner because submodules require independently bound credentials; ./scripts/test.sh fails in swc --test tsc on stale derived-class snapshots; workspace-wide Clippy is blocked by absent html5lib submodule fixtures.

[changeset-bot]

🦋 Changeset detected

Latest commit: 9a13962

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

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[codspeed]

Merging this PR will not alter performance

✅ 200 untouched benchmarks
⏩ 61 skipped benchmarks¹

---

_{Comparing fix/es-minifier-class-evaluation (9a13962) with main (c3e2d35)}

Footnotes

1. 61 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 62024bec0f

ℹ️ About Codex in GitHub

Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "Codex (@codex) review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

When you sign up for Codex through ChatGPT, Codex can also answer questions or update the PR, like "Codex (@codex) address that feedback".