Remove staleTime option from client

[ubbe-xyz]

Reasoning 💡

We reasoned that staleTime, a new option for <SessionProvider /> was unnecessary as another new option, refetchInterval, already covers this behaviour implicitly. Hence removing it from the client module 🗑.

Checklist 🧢

• Documentation
• Tests
• Ready to be merged

Affected issues 🎟

None.

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[codecov-commenter]

Codecov Report

Merging #2613 (c8bf54b) into next (1c1e841) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             next    #2613   +/-   ##
=======================================
  Coverage   13.96%   13.96%           
=======================================
  Files          85       85           
  Lines        1325     1325           
  Branches      379      378    -1     
=======================================
  Hits          185      185           
  Misses        951      951           
  Partials      189      189           

Impacted Files	Coverage Δ
src/client/react.js	95.54% <100.00%> (ø)

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[balazsorban44]

LGTM, this will have to be added to the docs, but also to the migration guide!

https://github.com/nextauthjs/docs/blob/main/docs/getting-started/upgrade-to-v4.md#3-sessionprovider