Support IS NULL and IS NOT NULL filter search

[laurakwhit]

Description & motivation 💭

Adds support for is null and is not null queries to filter search.

Screenshots (if applicable) 📸

Is null	Is not null

Text field	Datetime field	Boolean field	Number field

Design Considerations 🎨

Testing 🧪

How was this tested 👻

• Manual testing
• E2E tests added
• Unit tests added

Steps for others to test: 🚶🏽‍♂️🚶🏽‍♀️

• Verify Is null and Is not null show up for the following attributes

  • Int or Double
  • Text or Keyword
  • Boolean
  • Datetime

• and the filter works as expected

  • query is applied correctly in the url
  • query shows up correctly in the search input
  • refreshing the page the query shows up and is applied correctly
  • removing and adding multiple filters works as expected

• Verify when selecting an existing filter

  • the correct conditional and value are shown
  • changing the conditional and/or value works as expected

Checklists

Draft Checklist

Merge Checklist

Issue(s) closed

DT-2384

Docs

Any docs updates needed?

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Name	Status	Preview	Comments	Updated (UTC)
holocene	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 30, 2024 5:33pm

[rossedfort]

Code looks good, have not done any testing yet.