Fix gnote and libreoffice failure on gnome46

[GraceWang571]

With GNOTE 46, right-clicking a note to delete it is no longer possible
So, we need to use a different way to delete a note, here we will use send_key "delete";

Besides, due to bsc#1224395 the ctrl-q do not work on libreoffice math
So, I am updating the code to use assert_and_click 'close-libreoffice';

• Related ticket: https://progress.opensuse.org/issues/157672
• Needles: already added when debugging on o3 and osd
• Verification run:

TW Wayland: https://openqa.opensuse.org/tests/4215188#
(The libreoffice_mainmenu_components failed due to https://bugzilla.opensuse.org/show_bug.cgi?id=1225089)
TW X11: https://openqa.opensuse.org/tests/4219308#
SLE15SP6 X11: https://openqa.suse.de/tests/14429217#
SLE15SP6 Wayland: https://openqa.suse.de/tests/14429241#

[github-actions]

Great PR! Please pay attention to the following items before merging:

Files matching lib/**.pm:

• Consider adding or extending unit tests in t/

This is an automatically generated QA checklist based on modified files.

[zhaocongjia]

LGTM.