The dotted order for the run.
This is a string composed of {time}{run-uuid}.* so that a trace can be
sorted in the order it was executed.
Example:
- Parent: 20230914T223155647Z1b64098b-4ab7-43f6-afee-992304f198d8
- Children:
- 20230914T223155647Z1b64098b-4ab7-43f6-afee-992304f198d8.20230914T223155649Z809ed3a2-0172-4f4d-8a02-a64e9b7a0f8a
- 20230915T223155647Z1b64098b-4ab7-43f6-afee-992304f198d8.20230914T223155650Zc8d9f4c5-6c5a-4b2d-9b1c-3d9d7a7c5c7c
