Make v24.1.23, v24.3.19, v25.2.5 cloud-only (#20188)

Author: rmloveland

src/current/_data/releases.yml

@@ -9515,6 +9515,13 @@
     docker_arm_limited_access: false
   source: true
   previous_release: v24.1.22
+  cloud_only: true
+  cloud_only_message_short: 'Available only for select CockroachDB Cloud clusters'
+  cloud_only_message: >
+      This version is currently available only for select
+      CockroachDB Cloud clusters. To request to upgrade
+      a CockroachDB self-hosted cluster to this version,
+      [contact support](https://support.cockroachlabs.com/hc/requests/new).
 
 - release_name: v24.3.19
   major_version: v24.3
@@ -9542,6 +9549,13 @@
     docker_arm_limited_access: false
   source: true
   previous_release: v24.3.18
+  cloud_only: true
+  cloud_only_message_short: 'Available only for select CockroachDB Cloud clusters'
+  cloud_only_message: >
+      This version is currently available only for select
+      CockroachDB Cloud clusters. To request to upgrade
+      a CockroachDB self-hosted cluster to this version,
+      [contact support](https://support.cockroachlabs.com/hc/requests/new).
 
 - release_name: v25.2.5
   major_version: v25.2
@@ -9568,4 +9582,11 @@
     docker_arm_experimental: false
     docker_arm_limited_access: false
   source: true
-  previous_release: v25.2.4
+  previous_release: v25.2.4
+  cloud_only: true
+  cloud_only_message_short: 'Available only for select CockroachDB Cloud clusters'
+  cloud_only_message: >
+      This version is currently available only for select
+      CockroachDB Cloud clusters. To request to upgrade
+      a CockroachDB self-hosted cluster to this version,
+      [contact support](https://support.cockroachlabs.com/hc/requests/new).