feat!: move workspace renames behind flag, disable by default (#11189)

cli/testdata/coder_list_--output_json.golden

@@ -59,6 +59,7 @@
       "healthy": true,
       "failing_agents": []
     },
-    "automatic_updates": "never"
+    "automatic_updates": "never",
+    "allow_renames": false
   }
 ]

cli/testdata/coder_server_--help.golden

@@ -14,6 +14,11 @@ SUBCOMMANDS:
                               PostgreSQL deployment.
 
 OPTIONS:
+      --allow-workspace-renames bool, $CODER_ALLOW_WORKSPACE_RENAMES (default: false)
+          DEPRECATED: Allow users to rename their workspaces. Use only for
+          temporary compatibility reasons, this will be removed in a future
+          release.
+
       --cache-dir string, $CODER_CACHE_DIRECTORY (default: [cache dir])
           The directory to cache temporary files. If unspecified and
           $CACHE_DIRECTORY is set, it will be used for compatibility with

cli/testdata/server-config.yaml.golden

@@ -462,3 +462,7 @@ userQuietHoursSchedule:
   # change their quiet hours schedule and the site default is always used.
   # (default: true, type: bool)
   allowCustomQuietHours: true
+# DEPRECATED: Allow users to rename their workspaces. Use only for temporary
+# compatibility reasons, this will be removed in a future release.
+# (default: false, type: bool)
+allowWorkspaceRenames: false