Use BoxCloneService instead of BoxService in router pipeline services

[rohan-b99]

Originally opened #9145, but after discussing we think the Sync version is not needed

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[apollo-librarian]

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* graphos/routing/(latest)/customization/native-plugins.mdx
* graphos/routing/(latest)/observability/router-telemetry-otel/enabling-telemetry/standard-instruments.mdx
* graphos/routing/(latest)/operations/subscriptions/configuration.mdx

Build ID: 8d766df525f4c434427bc4ca
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URL: https://www.apollographql.com/docs/deploy-preview/8d766df525f4c434427bc4ca

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[goto-bus-stop]

I think a nice proof point for this PR would be to get rid of as many .buffered() calls as possible; we only had (most of) them to call into non-clonable services.