fix(e2e): skip middleware placement test on nextjs 16+

[jacekradko]

Summary

Updates middleware placement tests to handle Next.js 16 canary's improved middleware detection:

• src/app/middleware.ts test: Skip on Next.js 16 canary where middleware detection is smarter (Next 16 stable still shows the warning)
• Add corresponding "Does not display misplaced middleware error on Next 16 canary" test for src/app/middleware.ts case

Failing test: https://github.com/clerk/javascript/actions/runs/21662200954/job/62449227128

Test plan

• Nightly tests should pass with Next.js 16 canary
• Existing tests continue to work with Next.js < 16

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Project	Deployment	Actions	Updated (UTC)
clerk-js-sandbox	Ready	Preview, Comment	Feb 4, 2026 3:36pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 1051b1c

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

This PR includes changesets to release 0 packages

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[coderabbitai]

📝 Walkthrough

Walkthrough

Adds a new changeset metadata file .changeset/flat-eggs-stick.md containing two lines with ---. Updates integration/tests/middleware-placement.test.ts to introduce an internal helper isCanaryVersion(version) and canary-aware test logic. Several test flows now compute Next.js major and canary status, adjust skip conditions/messages, add a new test "Does not display misplaced middleware error on Next 16 canary", and include minor formatting tweaks.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: skipping middleware placement tests on Next.js 16+, which aligns with the changeset that adds canary-aware skip logic to the middleware placement test file.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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commit: 1051b1c

[wobsoriano]

thanks!