fix(chart): missing resources on volume statefulset initContainer (#8678)

* fix(chart): missing resources on volume statefulset initContainer

* chore(chart): use own resources for idx-vol-move initContainer

* chore(chart): improve comment for idxMoveResources value

k8s/charts/seaweedfs/values.yaml

@@ -393,6 +393,12 @@ volume:
 
   idx: {}
 
+  # Resource requests, limits, etc. for the vol-move-idx initContainer. This
+  # should map directly to the value of the resources field for a PodSpec,
+  # formatted as a multi-line string. By default no direct resource request
+  # is made.
+  idxVolMoveResources: {}
+
   logs: {}
 
   # limit background compaction or copying speed in mega bytes per second