fix(react-server): decode dynamic route params

[hi-ogawa]

Not sure where decoding should be applied. We should probably check with react router and tanstack.

• fix: fix encoding/matching issues with special chars remix-run/react-router#9477
• TanStack/router@a201903

Looking at tanstack, just running decodeURI for props.params seems enough, which is also what I did in the demo

• https://github.com/hi-ogawa/react-server-demo-remix-tutorial/blob/5ee83567cb77b667f0417f19e1fde548e82e63b5/src/routes/contacts/%5BcontactId%5D/page.tsx#L7-L8

todo

• test