.findOne reduces relations to an empty array (regression)

[satanTime]

Issue Description

const relations = [
  "company",
];

const user1 = await connection.getRepository(User).findOne(userAdmin.id, {
  relations,
});

console.log(relations); // prints []

Expected Behavior

relations stays untouched

Actual Behavior

relations is reduced to an empty array

Steps to Reproduce

Check the description above

My Environment

mysql on master branch

Relevant Database Driver(s)

• aurora-data-api
• aurora-data-api-pg
• better-sqlite3
• cockroachdb
• cordova
• expo
• mongodb
• mysql
• nativescript
• oracle
• postgres
• react-native
• sap
• sqlite
• sqlite-abstract
• sqljs
• sqlserver

Are you willing to resolve this issue by submitting a Pull Request?

• Yes, I have the time, and I know how to start.
• Yes, I have the time, but I don't know how to start. I would need guidance.
• No, I don't have the time, although I believe I could do it if I had the time...
• No, I don't have the time and I wouldn't even know how to start.