Fix: Android export dialog disappears on reflow

[brocktaylor7]

Details

This fixes a reflow issue that causes the export dialog to disappear when it shouldn't. This was because of the button and export dialog being rendered in a single component, so when that component would move to the collapsed menu due to reflow, the export dialog would disappear.

Before with reflow making dialog disappear:

After the fix:

Motivation

Addresses issue #4492

Context

The diff is a little confusing and it may make sense to look at the first two commits separately. This is due to the fact that we had two components doing the same thing in web and unified. One was called "ReportExportComponent" and one was called "ExportDialogWithLocalState". I much prefer the name "ReportExportComponent" but the code in ExportDialogWithLocalState was much closer to what I needed to unify the two. So I made the changes in ExportDialogWithLocalState in the first commit, then renamed it back to ReportExportComponent in the second commit. (Reach out if there is any confusion :))

I completely removed the entity formerly known as ReportExportComponent (which was only used in Unified).

Pull request checklist

• Addresses an existing issue: Android: export dialog disappears if window is resized #4492
• Ran yarn fastpass
• Added/updated relevant unit test(s) (and ran yarn test)
• Verified code coverage for the changes made. Check coverage report at: <rootDir>/test-results/unit/coverage
• PR title AND final merge commit title both start with a semantic tag (fix:, chore:, feat(feature-name):, refactor:). See CONTRIBUTING.md.
• (UI changes only) Added screenshots/GIFs to description above
• (UI changes only) Verified usability with NVDA/JAWS

[ThanyaLeif]

Looks good to me, nicely done!