docs: fix ignored promise from invalidate queries (#8847)

* fix(examples): Promise returned from invalidateQueries being ignored in optimistic-updates-cache example

* fix(examples): Promise returned from invalidateQueries is ignored in optimistic-updates-ui example

* fix(docs): Promise returned from invalidateQueries is ignored in optimistic-updates documentation

* Update docs/framework/react/guides/optimistic-updates.md

Co-authored-by: Dominik Dorfmeister <office@dorfmeister.cc>

* refactor(docs, examples): standardize queryClient.invalidateQueries syntax in all onSettled callbacks

* ci: apply automated fixes

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Co-authored-by: Dominik Dorfmeister <office@dorfmeister.cc>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>