copy Loader missing entryPoint in metafile

[RubenArtmann]

const result = await esbuild.build({
  ...BUILD_OPTIONS,
  entryPoints: ["static/logo.svg"],
  metafile: true,
  bundle: true,
  splitting: true,
  outdir: "{in-memory}/",
  chunkNames: "[name].[hash]",
  assetNames: "[name].[hash]",
  entryNames: "[name].[hash]",
  loader: {
    ".svg": "copy"
  }
});

outputs: {
  "{in-memory}/logo.PDEZIVS6.svg": {
    imports: [],
    exports: [],
    inputs: { "static/logo.svg": [Object] },
    bytes: 3050
  },
}

The problem is that looking up the output of a entryPoint is impossible / really ugly.
This is almost the same issue as #2565 and #1861 except for it being the copy loader.

PS: I had to set outdir to{in-memory}/, because otherwise i get an error with code splitting on (even with write: false)