feat(refocus): opt out operations from refetching

[aryan02420]

Reason for change

• I am cleaning up and migrating a large application and would like to remove all custom patches

Changes and Summary

• Added a refetchIf option to refocusExchange
  • Allows consumers to explicitly opt in or out of refetching
  • Mirrors patterns used in other exchanges:
    • requestPolicyExchange → shouldUpgrade
    • retryExchange → retryIf
  • Enables per-operation control instead of relying on global configuration
  • Aligns well with React Query’s useQuery, allowing behavior to be customized at the operation level where application context is available

[changeset-bot]

🦋 Changeset detected

Latest commit: 7490dac

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@urql/exchange-refocus	Patch

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