Change content type on single fetch requests

[brophdawg11]

Closes #9884

[changeset-bot]

🦋 Changeset detected

Latest commit: 064db2c

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

This PR includes changesets to release 16 packages

Name	Type
@remix-run/server-runtime	Patch
@remix-run/cloudflare	Patch
@remix-run/deno	Patch
@remix-run/dev	Patch
@remix-run/node	Patch
@remix-run/react	Patch
@remix-run/testing	Patch
@remix-run/cloudflare-pages	Patch
@remix-run/cloudflare-workers	Patch
@remix-run/architect	Patch
@remix-run/express	Patch
@remix-run/serve	Patch
create-remix	Patch
remix	Patch
@remix-run/css-bundle	Patch
@remix-run/eslint-config	Patch

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[ivogt]

Would you consider doing the same for defer? It has the same issue as single fetch.

[brophdawg11]

I don't think defer needs updating because it's being deprecated and replaced with Single Fetch very soon. But beyond that, it's a stable API so one could argue changing the content type is a breaking change so we could not make that change in v2 anyway. You may be able to change it in userland via handleDataRequest though.