Merge branch 'docs/routing-deprecated' into 'master'

Reject old cells routing proposals

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/141133



Merged-by: Kamil Trzciński <ayufan@ayufan.eu>
Approved-by: Kamil Trzciński <ayufan@ayufan.eu>
Co-authored-by: Steve Xuereb <sxuereb@gitlab.com>

doc/architecture/blueprints/cells/proposal-stateless-router-with-buffering-requests.md

@@ -2,8 +2,11 @@
 stage: enablement
 group: Tenant Scale
 description: 'Cells Stateless Router Proposal'
+status: rejected
 ---
 
+_This proposal was superseded by the [routing service proposal](routing-service.md)_
+
 <!-- vale gitlab.FutureTense = NO -->
 
 This document is a work-in-progress and represents a very early state of the

doc/architecture/blueprints/cells/proposal-stateless-router-with-routes-learning.md

@@ -2,8 +2,11 @@
 stage: enablement
 group: Tenant Scale
 description: 'Cells Stateless Router Proposal'
+status: rejected
 ---
 
+_This proposal was superseded by the [routing service proposal](routing-service.md)_
+
 <!-- vale gitlab.FutureTense = NO -->
 
 This document is a work-in-progress and represents a very early state of the