fix(#58695): improve zustand example

[N-Ziermann]

What?

Improvements to the with-zustand example

Why?

Because it ran into an error right when you started it and it also rerendered unnecessarily often.

How?

• I fixed the error when opening the page by fixing an hydration issue caused by using "Date.now()" both on the server and the client
• I made the example rerender less often by using zustand's useShallow optimisation
• I removed the target: "es5" from the tsconfig.json to also address this Issue: #58640
• I also made some generell code-style changes to make the code easier to read and/or consistent

Fixes #58695
Fixes #58640 (partially)

[ijjk]

Allow CI Workflow Run

• approve CI run for commit: de3621a

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