fix: convert InvocationCompletedDetails to unix milliseconds #481

Job	Run time
setup	4s
Wait For Callback Success Anonymous	1m 25s
Wait for Callback Success	1m 55s
Wait For Callback Heartbeat Sends	1m 28s
Basic Step	1m 26s
Wait For Callback With Child Context	1m 29s
Multiple Wait	1m 34s
Wait State	1m 24s
Wait for Callback Failure	1m 30s
Wait For Callback Nested	1m 37s
Map Operations	1m 27s
Wait For Callback Failing Submitter Catchable	2m 5s
Callback	1m 20s
Parallel with Failure Tolerance	1m 54s
Parallel Operations	1m 22s
Wait For Callback Mixed Ops	1m 25s
Create Callback Heartbeat	1m 46s
Wait For Callback Submitter Failure	1m 59s
Map Large Scale	2m 6s
Run in Child Context	1m 21s
Wait For Callback Multiple Invocations	1m 29s
Step with Retry	1m 39s
Run in Child Context Large Data	2m 1s
Hello World	1m 33s
Handler Error	1m 24s
Callback Success	1m 28s
Parallel with Custom SerDes	1m 57s
Block Example	1m 59s
Simple Execution	1m 57s
Parallel with Batch SerDes	1m 26s
Wait For Callback Serdes	1m 25s
Parallel with Max Concurrency	1m 38s
Comprehensive Operations	2m 9s
Map with Custom SerDes	1m 58s
Map with Min Successful	1m 24s
Create Callback Custom Serdes	1m 57s
None Results	1m 29s
Steps with Retry	1m 27s
Create Callback Mixed Operations	1m 57s
Map Completion Config	1m 29s
Logger Example	1m 57s
Callback Success None	1m 57s
Map with Batch SerDes	1m 26s
No Replay Execution	1m 28s
Parallel with Wait	1m 31s
Map with Failure Tolerance	1m 28s
Map with Max Concurrency	1m 29s
Run In Child Context With Failing Step	1m 29s
Create Callback Concurrency	1m 33s
Step with Name	1m 54s
Wait for Condition	1m 28s
	1h 22m 3s

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