add estimated size to Search Results virtual list in entity picker

[npfitz]

Closes ENG 8233

Description

Adds an accurate estimated size for a <ChunkyListItem> in the search tab, which solves the issue of of weird scrolling

How to verify

1. Open an entity picker (data picker is a good choice)
2. Perform a search that will return many results
3. grab the scroll bar in the search results, and drag down. the bar should follow your mouse

Demo

Before (on stats):

After:

Checklist

• [ ] Tests have been added/updated to cover changes in this PR

There was a reference in the original issue that points to a test that can be changed once this is fixed. However, that test has since changed, and doing a simple scrollTo("bottom") still results in weird behavior. I've confirmed the UX is better for real users, but cypress interactions still appear to be fussy

[github-actions]

e2e tests failed on 8f933f6a3f0fe1713be9e6e32730b6fe2dc7d280-1

e2e test run

File	Test Name
model-indexes.cy.spec.js	(flaky) scenarios > model indexes > should not reload the model for record in the same model
command-palette.cy.spec.js	(flaky) command palette > should render a searchable command palette
reproductions-1.cy.spec.js	(flaky) issues 11914, 18978, 18977, 23857 > should not display query editing controls and 'Browse databases' link
search-pagination.cy.spec.js	(flaky) scenarios > search > should allow users to paginate results

[trunk-io]

     

Flaky Test	Failure Summary	Logs
scenarios > search should allow users to paginate results	Unable to find an accessible element with the role "option" and name "/View and filter/" within 4000ms.	Logs ↗︎
issues 11914, 18978, 18977, 23857 should not display query editing controls and 'Browse databases' link	The test timed out while trying to find an element with the text "Repro" in the UI.	Logs ↗︎
command palette should render a searchable command palette	Unable to find an accessible element with the role "option" and name "Orders, Count" within a certain time limit.	Logs ↗︎
scenarios > model indexes should not reload the model for record in the same model	Unable to find an accessible element with the role "option" and name "Small Marble Shoes" within 4000ms.	Logs ↗︎

View Full Report ↗︎ ⋅ Docs