fix(menu-bar): close just nested menu when escape key is pressed

[marosoft]

focus stays with the parent menu when nested one is closed instead of closing all the menus

Fixes #11678

PR Checklist

Please check that your PR fulfills the following requirements:

• The commit message follows our guidelines
• Tests for the changes have been added or this is not a bug fix / enhancement
• Docs have been added, updated, or were not required

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Enhancement
[ ] Documentation content changes
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

At the moment when the user presses escape key while the nested menu is open, it causes all the menus to become closed and the focus is lost.

Issue Number: #11678

What is the new behavior?

When the escape key is pressed, only the current nested menu is closed and the focus goes to the parent menu.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[Splaktar]

LGTM

[Splaktar]

Doh, sorry, looked closer at the tests and found a few concerns.

[Splaktar]

LGTM