fix: scope storage type picker to the target organization

The storage create form fetched persistent-volume types once with no
tenant scope, so in the platform-admin "All" view the dropdown listed
every org's types and never re-scoped when the create-scope picker
retargeted the form — letting an org with no cluster-access grant pick
another org's types. The inline "add storage" sub-drawer in the instance
create form had the same gap plus a redundant org picker that could
retarget the storage away from the instance's org.

Both surfaces now pin the storage-type list to the chosen org (via the
X-Organization-Id header); the sub-drawer inherits the instance's scope
and hides its own picker. Page/table listings stay unscoped so every
row's type label still renders.

src/pages/gpu-service/instances/forms/storage-overlay.tsx

@@ -10,12 +10,18 @@ import useOverlayLayout from '../hooks/use-overlay-layout';
 
 interface StorageOverlayProps {
   open: boolean;
+  // Org the surrounding instance create form targets (platform admin "All"
+  // view). The storage inherits this scope, so the type list is pinned to
+  // it — the picker only offers types that org can reference. Undefined
+  // when there's no create-scope picker (the ambient org context applies).
+  scopeOrgId?: number | null;
   onCancel: () => void;
   onSubmit: (values: StorageFormData) => Promise<void> | void;
 }
 
 const StorageOverlay: React.FC<StorageOverlayProps> = ({
   open,
+  scopeOrgId,
   onCancel,
   onSubmit
 }) => {
@@ -28,9 +34,14 @@ const StorageOverlay: React.FC<StorageOverlayProps> = ({
 
   useEffect(() => {
     if (open) {
-      fetchStorageClass({ page: -1 });
+      fetchStorageClass(
+        { page: -1 },
+        scopeOrgId != null
+          ? { headers: { 'X-Organization-Id': String(scopeOrgId) } }
+          : undefined
+      );
     }
-  }, [open]);
+  }, [open, scopeOrgId]);
 
   const handleSubmit = () => {
     formRef.current?.submit();
@@ -75,6 +86,7 @@ const StorageOverlay: React.FC<StorageOverlayProps> = ({
           ref={formRef}
           action={PageAction.CREATE}
           open={open}
+          showOrgScope={false}
           onFinish={handleFinish}
         />
       </FormContext.Provider>

src/pages/gpu-service/instances/forms/storage-volume.tsx

@@ -30,6 +30,10 @@ const StorageVolume = ({
   const { getRuleMessage } = useAppUtils();
   const form = Form.useFormInstance<FormData>();
   const storageMode = Form.useWatch('storageMode', form);
+  // Owned by the instance create-scope picker (platform admin "All" view).
+  // A storage added inline belongs to the same org as the instance, so pass
+  // it to the overlay to scope the storage-type list to that org.
+  const scopeOrgId = Form.useWatch('organization_id', form);
   const { fetchData: createStorage } = useCreateStorage();
   const { detailData: storageData, fetchData: fetchStorage } =
     useQueryStorage();
@@ -232,6 +236,7 @@ const StorageVolume = ({
 
       <StorageOverlay
         open={overlayOpen}
+        scopeOrgId={scopeOrgId}
         onCancel={() => setOverlayOpen(false)}
         onSubmit={handleCreateStorage}
       />