Implement Promise.allSettled

Implement your own Promise.allSettled that waits for all promises to settle (resolve or reject) and returns an array of result objects.

Requirements

• Each result should be { status: 'fulfilled', value } or { status: 'rejected', reason }
• Never rejects — always resolves with the array of results
• Results should be in the same order as the input

Example

await promiseAllSettled([
  Promise.resolve('a'),
  Promise.reject('b'),
]); // [{ status: 'fulfilled', value: 'a' }, { status: 'rejected', reason: 'b' }]