Odd reported dates in search

[yurivish]

Describe the bug Odd dates reported in search interface

To Reproduce

https://observablehq.com/search?query=%40mbostock&creator=mbostock&owner=true&sort=created&direction=desc&useES=true

The first result shows April 9 as the edited date

But the most recent edit date on the notebook itself shows a different date

Expected behavior Consistent dates

Desktop (please complete the following information): macOS, chrome 112

[mythmon]

Using a similar query on our old search backend displays the same inconsistent date. The sort by option behaves differently though.

[CobusT]

Related #505