fix(release): remove invalid web workflow dispatch

[chaliy]

Motivation

• The release job attempted to run a nonexistent workflow publish-web.yml, which causes gh workflow run to exit non-zero and abort subsequent release steps.
• The browser publish is already handled by publish-wasm.yml, so the extra dispatch is a duplicate and a regression.

Description

• Remove the invalid dispatch line gh workflow run publish-web.yml --ref "$TAG" from .github/workflows/release.yml.
• Update scripts/tests/test_release_workflow.py to expect publish-wasm.yml instead of publish-web.yml and add test_release_dispatch_targets_exist to assert each gh workflow run target exists under .github/workflows.
• Keep existing browser/WASM publishing behavior intact by relying on publish-wasm.yml.

Testing

• Reproduced the failure with python3 -m unittest scripts.tests.test_release_workflow before the fix and observed the missing publish-web.yml assertion fail.
• Ran python3 -m unittest discover -s scripts/tests -p 'test_*.py' after the fix and all 8 tests passed.
• Ran ruff check/ruff format --check on the modified test file and git diff --check with no issues.

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Codex Task

[cloudflare-workers-and-pages]

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	bashkit	07ba78f	Commit Preview URL	Jul 26 2026, 10:45 PM