Defect 2280249 (#1432)

* autoscale and manual radiobuutton fixes

* alt text attribute for images

* Revert "alt text attribute for images"

This reverts commit 5a660551c6.

* alt text for decorative images

* sev2 accessibilitydefects in data explorer

* Commit to my local branch

* role has been added to graphic tag

* Update TableEntity.tsx

* Update ThroughputInput.tsx

* Update ThroughputInput.test.tsx.snap

* Update TreeComponent.tsx

* Update TableEntity.tsx

* Update AddCollectionPanel.tsx

* Update AddCollectionPanel.tsx

* Update AddCollectionPanel.tsx

* Update AddCollectionPanel.tsx

* Update AddCollectionPanel.tsx

* Update SplashScreen.tsx

* Update TreeComponent.test.tsx.snap

* Update TreeComponent.test.tsx.snap

src/Explorer/Graph/GraphExplorerComponent/D3ForceGraph.ts

@@ -729,6 +729,7 @@ export class D3ForceGraph implements GraphRenderer {
     var iconGroup = newNodes
       .append("g")
       .attr("class", "iconContainer")
+      .attr("role", "group")
       .attr("tabindex", 0)
       .attr("aria-label", (d: D3Node) => {
         return this.retrieveNodeCaption(d);