Fix local resource file URLs with hashes

[tianheng2017]

Summary

• Encode Electron local resource file URLs with Node's pathToFileURL so reserved characters like # are preserved as part of the path.
• Decode file URLs back to local paths with fileURLToPath for resource file actions.
• Encode local/runtime resource URLs before cache-busting or token parameters are appended, so # is not interpreted as a URL fragment in previews or exported games.
• Add focused regression coverage for a local resource path containing a hash and cache-busting parameters.

Fixes #4015.

Tests

• CI=true react-app-rewired test --env=node --runInBand --watchAll=false src/ResourcesList/ResourceUtils.spec.js
• CI=true react-app-rewired test --env=node --runInBand --watchAll=false src/ResourcesList/ResourceUrlEncoding.spec.js
• npm run flow
• npm run check-format (in newIDE/app)
• npm run check-types -- --pretty false (in GDJS)
• npx prettier --list-different Runtime/ResourceLoader.ts (in GDJS)
• git diff --check

[tianheng2017]

CI note for the latest commit (9ad135c): the project checks exercised by this PR are passing locally and in CI where they are not blocked by generated artifacts.

Local checks:

• CI=true react-app-rewired test --env=node --runInBand --watchAll=false src/ResourcesList/ResourceUtils.spec.js
• CI=true react-app-rewired test --env=node --runInBand --watchAll=false src/ResourcesList/ResourceUrlEncoding.spec.js
• npm run flow
• npm run check-format in newIDE/app
• npm run check-types -- --pretty false in GDJS
• targeted Prettier check for GDJS/Runtime/ResourceLoader.ts
• git diff --check

Semaphore is red, but the latest logs show npm run flow finishes with No errors!; the failing step is npm run check-script-types, where TypeScript parses the downloaded generated ../public/libGD.js and errors at line 22. The newIDE tests job is failing on the same generated libGD.js-for-tests-only parse issue before the resource URL tests are exercised. GDJS typing/tests and newIDE format/lint are green on Semaphore.

[tianheng2017]

Follow-up update: I added commit \d9a4aa3\ to improve the \libGD.js\ download fallback used by newIDE CI. This mirrors the master-commit fallback behavior that avoids using an incompatible generated \libGD.js\ artifact when the PR branch artifact is unavailable.\n\nRe-verified locally after the update:\n- \
ode --check scripts/import-libGD.js\\n- \
px prettier --list-different scripts/import-libGD.js\\n- \CI=true react-app-rewired test --env=node --runInBand --watchAll=false src/ResourcesList/ResourceUtils.spec.js\\n- \CI=true react-app-rewired test --env=node --runInBand --watchAll=false src/ResourcesList/ResourceUrlEncoding.spec.js\\n- \
pm run flow\\n- \
pm run check-format\\n- \
pm run check-types -- --pretty false\ in \GDJS\\n- \git diff --check\\n\nThe new Semaphore/Travis runs are queued now.

[tianheng2017]

Latest update for commit \793927: Semaphore is now green. I fixed the Linux/Windows path expectation in the local file URL decoding regression test and re-verified locally:\n\n- \CI=true npx react-app-rewired test --env=node --runInBand --watchAll=false src/ResourcesList/ResourceUtils.spec.js\n- \CI=true npx react-app-rewired test --env=node --runInBand --watchAll=false src/ResourcesList/ResourceUrlEncoding.spec.js\n-
pm run flow\n-
pm run check-format\n- \git diff --check\n\nTravis is still queued/pending.