Pick Infra UI from #166813 (#167348)

## Summary

We're breaking https://github.com/elastic/kibana/pull/166813 up into
smaller PRs in the interest of getting PRs through sooner for type
fixes. These are the changes for Infra UI.

x-pack/plugins/asset_manager/server/routes/assets/hosts.ts

@@ -47,12 +47,15 @@ export function hostsRoutes<T extends RequestHandlerContext>({
     async (context, req, res) => {
       const { from = 'now-24h', to = 'now' } = req.query || {};
       const esClient = await getEsClientFromContext(context);
+      const coreContext = await context.core;
+      const soClient = coreContext.savedObjects.client;
 
       try {
         const response = await assetAccessor.getHosts({
           from: datemath.parse(from)!.toISOString(),
           to: datemath.parse(to)!.toISOString(),
           esClient,
+          soClient,
         });
 
         return res.ok({ body: response });