incorrect unit for group duration

[dreambo8563]

Version

6.1.4

Browser and OS info

Chrome 100 / Mac OS

Steps to reproduce

1. select Timeline tab
2. select Performance layer
3. select one event on right panel
4. group duration shown on right

What is expected?

should be ms

What is actually happening?

current value is 1000 times than real number

Mybe should /1000 here ?

https://github.com/vuejs/devtools/blob/bc6fc1d66edc4a0060bf650326c3ec72c3a920ae/packages/app-frontend/src/features/timeline/TimelineEventInspector.vue#L124