a11y: title-bar menu titles and context menu items appear twice in the semantics tree #1815

Problem

A semantics snapshot of the running app (debug, dev at 7cae35c) lists every title-bar menu title twice with the same bounds: File, File, Edit, Edit, View, View, Connection, Connection, Help, Help. The grid's context menu does the same for each item (Copy Value, Copy Value, Copy with Headers, Copy with Headers, …).

A screen reader reads each of them twice, and keyboard / switch navigation stops on each one twice.

Likely cause

The menu item widget adds its own Semantics(button: true, label: …) around a child that already exposes the same label (a MenuItemButton / InkWell with text). One of the two should be excluded (ExcludeSemantics on the inner one, or no outer node).

Where

QueryaMenuBar (title bar) and the kit's menu surface / QueryaMenuItem used by showQueryaContextMenuBuilder.

Acceptance

• Each menu title and menu item is one semantics node with its label (and shortcut).
• A test counts the semantics nodes of the title bar and of an open context menu.