Unexpected value for negative durations

**Describe the bug**
`
const d = dayjs.duration(-61001)
console.log(d) // prints: l{$d: Object{years: 0, months: 0, days: 0, hours: 0, minutes: -1, seconds: -1, milliseconds: -1}, $l: 'en', $ms: -61001}
`

**Expected behavior**
The negative sign should bubble up to the highest unit. It should return then:
`
l{$d: Object{years: 0, months: 0, days: 0, hours: 0, minutes: -1, seconds: 1, milliseconds: 1}, $l: 'en', $ms: -61001}
`

because:

_-1 * 60 * 1000 + 1 * 1000 + 1 = -61000_

Especially, when formatting a negative value, you will get something like "-01:-01:-1" where "-01:01:1" was expected.

**Information**
- Day.js Version [e.g. v1.10.6]
- OS: [e.g. Chrome Windows]
- Browser [e.g. chrome 62]

This issue is related to #1317 but seems to only partially solve this

The report names no files, tests, or entry points. Reproduce the issue with dayjs.duration(-61001), then locate the duration normalization and formatting paths; done means negative values preserve the sign only on the highest unit and format as "-01:01:1" rather than repeating negative signs.

Written by the indexing model from the issue text.