Lighten Strapi CMS: drop unused cloud plugin, disable telemetry/promo UI

Remove @strapi/plugin-cloud (deploy is self-hosted via Docker/Ansible,
never Strapi Cloud), disable the admin NPS/Enterprise-promotion flags
(single-admin panel, no upsell needed), disable Strapi's anonymous
telemetry, and prune dev dependencies from the production Docker image
layer.

cms/package-lock.json

@@ -9,7 +9,6 @@
       "version": "0.1.0",
       "dependencies": {
         "@strapi/database": "5.52.1",
-        "@strapi/plugin-cloud": "5.52.1",
         "@strapi/plugin-users-permissions": "5.52.1",
         "@strapi/strapi": "5.52.1",
         "pg": "8.20.0",
@@ -7684,29 +7683,6 @@
         "npm": ">=6.0.0"
       }
     },
-    "node_modules/@strapi/plugin-cloud": {
-      "version": "5.52.1",
-      "resolved": "https://registry.npmjs.org/@strapi/plugin-cloud/-/plugin-cloud-5.52.1.tgz",
-      "integrity": "sha512-l5AZ03hhU4cz3ow1Cqvf8d6cJLMrDEjeHa0Jz90ObFygKVo4v3rSBL3WT++X8BZnBQRT6rGj5RrSMwTxL5bggw==",
-      "license": "MIT",
-      "dependencies": {
-        "@strapi/design-system": "2.2.4",
-        "@strapi/icons": "2.2.4",
-        "react-intl": "6.6.2"
-      },
-      "engines": {
-        "node": ">=20.0.0 <=26.x.x",
-        "npm": ">=6.0.0"
-      },
-      "peerDependencies": {
-        "@strapi/admin": "^5.0.0",
-        "@strapi/strapi": "^5.0.0",
-        "react": "^17.0.0 || ^18.0.0",
-        "react-dom": "^17.0.0 || ^18.0.0",
-        "react-router-dom": "^6.30.3",
-        "styled-components": "^6.0.0"
-      }
-    },
     "node_modules/@strapi/plugin-users-permissions": {
       "version": "5.52.1",
       "resolved": "https://registry.npmjs.org/@strapi/plugin-users-permissions/-/plugin-users-permissions-5.52.1.tgz",