RFR: 8055: Improvement in stacktrace view for Duration [v3]

[Virag Purnam]

On Sun, 21 May 2023 10:41:20 GMT, Suchita Chaturvedi <schaturvedi at openjdk.org> wrote:

>> 1. Added a new column for Duration. It will be populated only when the "Show Duration" toggle icon is clicked. Not by default.
>> 2. Fixed NaN issue for screens where duration is not present.
>> 3. Added timeunit to make tooltip more meaningful.
>> 
>> Please refer JIRA description for more details.
>
> Suchita Chaturvedi has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Implemented review comments

Marked as reviewed by vpurnam (Committer).

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PR Review: https://git.openjdk.org/jmc/pull/475#pullrequestreview-1442317370