chore: surface package resolution failures (#4822)

Author: benmccann

packages/vite/src/node/ssr/ssrExternal.ts

@@ -63,6 +63,9 @@ export function resolveSSRExternal(
       requireEntry = require.resolve(id, { paths: [root] })
     } catch (e) {
       // resolve failed, assume include
+      config.logger.warn(
+        `Bundling package for SSR due to resolve failure. ${e.message}`
+      )
       continue
     }
     if (!entry) {