feat: add support for keyboard initialized menu popup (#38954)

* feat: add support for keyboard initialized menu popup

Co-authored-by: Samuel Attard <marshallofsound@electronjs.org>

* Update docs/api/menu.md

Co-authored-by: Erick Zhao <erick@hotmail.ca>

Co-authored-by: Samuel Attard <sam@electronjs.org>

* fix: add patch to chromium for keyboard accessibility menu behavior

Co-authored-by: Samuel Attard <marshallofsound@electronjs.org>

* refactor: s/initiatedByKeyboard/sourceType

Co-authored-by: Samuel Attard <marshallofsound@electronjs.org>

* fix: ignore initial mouse event to retain keyboard initiated focus

Co-authored-by: Samuel Attard <marshallofsound@electronjs.org>

* Update docs/api/menu.md

Co-authored-by: Samuel Maddock <samuel.maddock@gmail.com>

Co-authored-by: Samuel Attard <sam@electronjs.org>

---------

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Samuel Attard <marshallofsound@electronjs.org>
Co-authored-by: Samuel Attard <sam@electronjs.org>

docs/api/menu.md

@@ -80,6 +80,10 @@ The `menu` object has the following instance methods:
   * `positioningItem` number (optional) _macOS_ - The index of the menu item to
     be positioned under the mouse cursor at the specified coordinates. Default
     is -1.
+  * `sourceType` string (optional) _Windows_ _Linux_ - This should map to the `menuSourceType`
+    provided by the `context-menu` event. It is not recommended to set this value manually,
+    only provide values you receive from other APIs or leave it `undefined`.
+    Can be `none`, `mouse`, `keyboard`, `touch`, `touchMenu`, `longPress`, `longTap`, `touchHandle`, `stylus`, `adjustSelection`, or `adjustSelectionReset`.
   * `callback` Function (optional) - Called when menu is closed.
 
 Pops up this menu as a context menu in the [`BrowserWindow`](browser-window.md).