Update MONet parsing to be consistent with updated source data format

[eecavanna]

Currently, on the main branch, the map web page is not loading (screenshot in #111). That's because the data it is fetching is in a different format than the web page was written to parse (the data is in the new "array of Entitys" format, whereas the web page was written to parse the "array of thingies" format the BERtron hackathon members had come up with a few months ago).

On this branch, I updated the web page to parse that data in a way that works with the new format. I expect to do something similar for the other "data sources" (e.g. NMDC, JGI) once their JSON files get updated.

Fixes #111

[Copilot]

Pull Request Overview

Updates the MONet data parsing logic to handle the new "array of Entity" data format instead of the previous "array of thingies" format, fixing the broken map web page functionality.

• Changed coordinate extraction to use the coordinates property from each entity object
• Updated identifier and URL extraction to use standardized id and uri properties from entity objects
• Modified comment to reflect the new BERtron entity-based data structure

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