Fix Tailscale operator PodSecurity issues

- Change namespace from enforce:restricted to warn:restricted to allow operator to run without PodSecurity blocking
- Remove runAsUser:0 from operator as it's no longer needed
- This allows the Tailscale operator to run with its default configuration

infrastructure/controllers/base/tailscale/namespace.yaml

@@ -3,4 +3,5 @@ kind: Namespace
 metadata:
   name: tailscale
   labels:
-    pod-security.kubernetes.io/enforce: restricted
+    pod-security.kubernetes.io/warn: restricted
+    pod-security.kubernetes.io/warn-version: latest

infrastructure/controllers/base/tailscale/release-operator.yaml

@@ -31,8 +31,7 @@ spec:
       waitForLinkLocal: false
       useOAuth: false
       useOIDC: false
-      podSecurityContext:
-        runAsUser: 0
+      podSecurityContext: {}
       securityContext:
         allowPrivilegeEscalation: false
         seccompProfile: