refactor(devtools): move default theme to theme file, fix types

[DamianOsipiuk]

Move the default theme to the proper file.
Fix types for theme.tsx
No functional changes.

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/tannerlinsley/react-query/Dx3tcBRFEqsqSbWRCVw1jqxg6Wpr
✅ Preview: https://react-query-git-fork-damianosipiuk-refactor-move-defa-a7d67b.vercel.app

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 94c9ef4:

Sandbox	Source
tannerlinsley/react-query: basic	Configuration
tannerlinsley/react-query: basic-typescript	Configuration

[TkDodo]

have a look at the auto-deployed codesandboxes please - I can't see the devtools anymore :/

https://codesandbox.io/s/tannerlinsleyreact-query-basic-y5jg9

[DamianOsipiuk]

That is very weird, as it worked fine when I was checking locally.
I will double-check locally, and if I would not be able to find the issue, then maybe deployment to codesandbox somehow got broken.

[DamianOsipiuk]

@TkDodo Should be fixed now

[tannerlinsley]

🎉 This PR is included in version 3.16.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀