[miniflare] fix: remove __STATIC_CONTENT_MANIFEST from module worker env

[mrbbot]

Fixes #4374.

What this PR solves / how to test:

When using Workers Sites with a module worker, the asset manifest must be imported from the __STATIC_CONTENT_MANIFEST virtual module. Miniflare provided this module, but also erroneously added __STATIC_CONTENT_MANIFEST to the env object too. Whilst this didn't break anything locally, it could cause users to develop Workers that ran locally, but not when deployed. This change ensures env doesn't contain __STATIC_CONTENT_MANIFEST.

To test this, run wrangler dev in fixtures/sites-app and verify __STATIC_CONTENT_MANIFEST doesn't appear in the env object.

Author has addressed the following:

• Tests
  • Included
  • Not necessary because:
• Changeset (Changeset guidelines)
  • Included
  • Not necessary because:
• Associated docs
  • Issue(s)/PR(s):
  • Not necessary because: this was erroneous local only behaviour

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[changeset-bot]

🦋 Changeset detected

Latest commit: fc8043a

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

This PR includes changesets to release 3 packages

Name	Type
miniflare	Patch
@cloudflare/pages-shared	Patch
wrangler	Patch

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[github-actions]

A wrangler prerelease is available for testing. You can install this latest build in your project with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7004078380/npm-package-wrangler-4505

You can reference the automatically updated head of this PR with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/7004078380/npm-package-wrangler-4505

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7004078380/npm-package-wrangler-4505 dev path/to/script.js

Additional artifacts:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7004078380/npm-package-miniflare-4505

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7004078380/npm-package-cloudflare-pages-shared-4505

Note that these links will no longer work once the GitHub Actions artifact expires.

---

[email protected] includes the following runtime dependencies:

Package	Constraint	Resolved
miniflare	workspace:*	3.20231030.1
workerd	1.20231030.0	1.20231030.0
workerd --version	1.20231030.0	2023-10-30

|

Please ensure constraints are pinned, and miniflare/workerd minor versions match.

[codecov]

Codecov Report

Merging #4505 (fc8043a) into main (d79a68f) will increase coverage by 0.03%.
Report is 7 commits behind head on main.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4505      +/-   ##
==========================================
+ Coverage   75.44%   75.47%   +0.03%     
==========================================
  Files         240      240              
  Lines       12851    12851              
  Branches     3309     3309              
==========================================
+ Hits         9695     9699       +4     
+ Misses       3156     3152       -4     

see 3 files with indirect coverage changes