Fix pageMiddleware args

[timleslie]

Pass in a context object which includes the session context methods, which are otherwise inaccessible here. More generally this is just a simpler API to use.

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🦋 Changeset detected

Latest commit: 755e2b0

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

This PR includes changesets to release 18 packages

Name	Type
@keystone-next/auth	Major
@keystone-next/keystone	Major
@keystone-next/types	Patch
@keystone-next/example-auth	Patch
@keystone-next/app-basic	Patch
@keystone-next/example-ecommerce	Patch
keystone-next-app	Patch
@keystone-next/example-roles	Patch
@keystone-next/example-sandbox	Patch
@keystone-next/example-with-auth	Patch
@keystone-next/test-utils-legacy	Patch
@keystone-next/benchmarks-legacy	Patch
@keystone-next/example-blog	Patch
@keystone-next/example-embedded-nextjs	Patch
@keystone-next/example-json-field	Patch
@keystone-next/example-todo	Patch
@keystone-next/fields-document	Patch
@keystone-next/fields	Patch

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