fix: scope test values under raw subchart and align ConfigMap name with strategic merge patches

The race condition test values.yaml had templates at the top level instead
of scoped under the raw subchart key, causing helm template to produce no
output and chartify's ReplaceWithRendered to fail with an empty
helmx.1.rendered directory. Also align the ConfigMap name to match the
strategicMergePatches target.

Signed-off-by: yxxhero <aiopsclub@163.com>

test/integration/test-cases/issue-2502-race-condition-local-chart/input/helm/my-chart/values.yaml

@@ -1,8 +1,9 @@
-templates:
-  - |
-    apiVersion: v1
-    kind: ConfigMap
-    metadata:
-      name: {{ .Release.Name }}-config
-    data:
-      key: value
+raw:
+  templates:
+    - |
+      apiVersion: v1
+      kind: ConfigMap
+      metadata:
+        name: test-cm
+      data:
+        key: value