Honor `defaultDateShortFormat` setting on Visual File History

[eamodio]

Posted from another feedback channel

Use Date Format setting in Gitlens: Visual File History

“In Gitlens settings, there is a Date and Time format settings.
At the bottom of a Visual File History (Gitlens+ feature), you print the date. However, the date is NOT formatted as the settings but in a very strange way mm/dd/yyyy. I would like to have the date formatted according to the settings (currently YYYY-MM-DD for me)”

[github-actions]

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