Only show marquee for selected item (#7180)

* only show marquee for selected item

* Revert "only show marquee for selected item"

This reverts commit d17af210c2.

* revert change made in #6767

* create framework for displayLayout visual test

* WIP create display layout for test

* only show marquee for selected

* fix selection of object in nested layout

* fix grid and code cleanup

* add child layouts side by side

* code cleanup

* externalize setup for reuse in multiple tests

* write marquee and grid tests

* fix object in layout locator

* fix nested layout selector

* add aria label to layouts

* fix layout locator

* add jsdoc for test setup function

* make test more efficient

* cleanup and linting

* update locator

* update locators

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Co-authored-by: John Hill <john.c.hill@nasa.gov>

e2e/tests/functional/plugins/plot/scatterPlot.e2e.spec.js

@@ -57,7 +57,7 @@ test.describe('Scatter Plot', () => {
     await page.getByRole('tab', { name: 'Elements' }).click();
     await expect.soft(page.locator(`#inspector-elements-tree >> text=${swg1.name}`)).toBeVisible();
     await saveButton.click();
-    await page.locator('li[title="Save and Finish Editing"]').click();
+    await page.getByRole('listitem', { name: 'Save and Finish Editing' }).click();
 
     // Create another sine wave generator within the scatter plot
     const swg2 = await createDomainObjectWithDefaults(page, {