Don't Refetch feed source list when opening project

[miles-grant-ibigroup]

Checklist

• Appropriate branch selected (all PRs must first be merged to dev before they can be merged to master)
• Any modified or new methods or classes have helpful JSDoc and code is thoroughly commented
• The description lists all applicable issues this PR seeks to resolve
• The description lists any configuration setting(s) that differ from the default settings
• All tests and CI builds passing
• e2e tests are all passing (remove this if not merging to master)

Description

Currently we re-fetch the entire feed source list when opening a project, even though we already have all that information downloaded. Really the true fix here is to look at our data insertion pipeline. For now, this PR adds a check that prevents the re-fetch from happening if we already have the needed data.

I would be open to a more holistic solution if anyone has one in mind!

[philip-cline]

I can't think of a better fix personally, and this seems clean enough especially since it will make a big difference in load times in the short term.

You're on a roll with DT PRs rn (rocket ship emoji)

[daniel-heppner-ibigroup]

I'm too out of touch with DT right now to consider better approaches, but this works. Thanks!