EcefLocation provided to StandaloneDb.createEmpty does not persist

[ben-polinsky]

Describe the bug
When providing StandaloneDb.createEmpty with an ecefLocation, the ecefLocation is not persisted.

To Reproduce

const ecefLocation = new EcefLocation({...})
const db = StandaloneDb.createEmpty("./noEcef.bim", {
  rootSubject: { name: "ecef demo" },
  ecefLocation
});

db.ecefLocation  // undefined
db.ecefLocation = ecefLocation
db.ecefLocation  // now defined

Reproduction: https://replit.com/@benpolinsky/iTwin-standaloneDbcreateEmpty-ecefLocation-bug

Expected behavior
Any CreateEmptyStandaloneIModelProps fields should persist when provided to createEmpty. If fields aren't applicable in this situation, that should be documented and the fields considered for deprecation/removal.

• OS: Mac OS 15.3.1
• iTwin.js 4.10.11