Support unique where filters where isIndexed: 'unique' is supported

[emmatown]

Closes #6809

[changeset-bot]

🦋 Changeset detected

Latest commit: 51263c5

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

This PR includes changesets to release 35 packages

Name	Type
@keystone-next/keystone	Major
@keystone-next/example-assets-cloud	Patch
@keystone-next/example-assets-local	Patch
@keystone-next/example-auth	Patch
@keystone-next/examples-app-basic	Patch
@keystone-next/example-ecommerce	Patch
@keystone-next/example-embedded-nextjs	Patch
keystone-next-app	Patch
@keystone-next/example-roles	Patch
@keystone-next/example-sandbox	Patch
@keystone-next/example-blog	Patch
@keystone-next/example-custom-admin-ui-logo	Patch
@keystone-next/example-custom-admin-ui-navigation	Patch
@keystone-next/example-custom-admin-ui-pages	Patch
@keystone-next/example-custom-field-view	Patch
@keystone-next/example-custom-field	Patch
@keystone-next/example-default-values	Patch
@keystone-next/example-document-field	Patch
@keystone-next/example-extend-graphql-schema-graphql-ts	Patch
@keystone-next/example-extend-graphql-schema	Patch
@keystone-next/example-json-field	Patch
@keystone-next/example-rest-api	Patch
@keystone-next/example-task-manager	Patch
@keystone-next/example-testing	Patch
@keystone-next/example-virtual-field	Patch
@keystone-next/example-with-auth	Patch
@keystone-next/auth	Major
@keystone-next/cloudinary	Major
@keystone-next/fields-document	Major
@keystone-next/session-store-redis	Major
@keystone-next/benchmarks-legacy	Patch
@keystone-next/test-projects-basic	Patch
@keystone-next/test-projects-crud-notifications	Patch
@keystone-next/test-projects-live-reloading	Patch
@keystone-next/website	Patch

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[dcousens]

LGTM