add names for schema compare dialog (#6856)

src/sql/base/parts/editableDropdown/browser/dropdown.ts

@@ -327,4 +327,8 @@ export class Dropdown extends Disposable {
 	public get enabled(): boolean {
 		return this._input.isEnabled();
 	}
+
+	public set ariaLabel(val: string) {
+		this._input.setAriaLabel(val);
+	}
 }

src/sql/workbench/browser/modelComponents/dropdown.component.ts

@@ -109,6 +109,7 @@ export default class DropDownComponent extends ComponentBase implements ICompone
 
 		if (this.ariaLabel !== '') {
 			this._selectBox.setAriaLabel(this.ariaLabel);
+			this._editableDropdown.ariaLabel = this.ariaLabel;
 		}
 
 		if (this.editable) {