fix(llm-serving): podMetadata is not a field on this KServe CRD

The installed InferenceService CRD declares annotations and labels directly under
spec.predictor, not under spec.predictor.podMetadata. Two manifests used podMetadata,
so every diff and apply failed with 'field not declared in schema' and the whole
Application could not reconcile.

Move the prometheus scrape annotations and the labels up one level. Nothing is lost:
the same keys, in the place the CRD accepts.

k8s/apps/llm-serving/embeddings.yaml

@@ -45,14 +45,13 @@ spec:
       volumeMounts:
       - mountPath: /mnt/models
         name: models
-    podMetadata:
-      annotations:
-        prometheus.io/scrape: "true"
-        prometheus.io/port: "8080"
-        prometheus.io/path: "/metrics"
-      labels:
-        app.kubernetes.io/name: llm-embeddings
-        app.kubernetes.io/part-of: llm-serving
+    annotations:
+      prometheus.io/scrape: "true"
+      prometheus.io/port: "8080"
+      prometheus.io/path: "/metrics"
+    labels:
+      app.kubernetes.io/name: llm-embeddings
+      app.kubernetes.io/part-of: llm-serving
     maxReplicas: 1
     minReplicas: 1
     nodeSelector:

k8s/apps/llm-serving/reranker.yaml

@@ -45,14 +45,13 @@ spec:
       volumeMounts:
       - mountPath: /mnt/models
         name: models
-    podMetadata:
-      annotations:
-        prometheus.io/scrape: "true"
-        prometheus.io/port: "8080"
-        prometheus.io/path: "/metrics"
-      labels:
-        app.kubernetes.io/name: llm-reranker
-        app.kubernetes.io/part-of: llm-serving
+    annotations:
+      prometheus.io/scrape: "true"
+      prometheus.io/port: "8080"
+      prometheus.io/path: "/metrics"
+    labels:
+      app.kubernetes.io/name: llm-reranker
+      app.kubernetes.io/part-of: llm-serving
     maxReplicas: 1
     minReplicas: 1
     nodeSelector: