Romanian Keymap for German Keyboards is still using Cedillas for Romanian Characters instead of Commas

[Kai Junghans]

Description of problem:
gnome-keyboard-properties for Romanian language in German keyboards "Romanian (Germany)" and "Romanian (Germany without Accents)" is still using the incorrect characters for ș, ț, Ș and Ț. Instead of a comma underneath the character, they use a cedilla.
The Romanian standard keyboard layout does this correctly since 2008 (See Bug #108057)

For more precise information as to the why the cedillas are incorrect:
http://www.secarica.ro/html/s-uri_si_t-uri.html (in Romanian):

Steps to reproduce:
1. Run Ubuntu 21.10 in German Language
2. Klick the Dash Button
3. Type "Einstellungen" to go to Settings and click the icon.
4. Select Tastatur > Eingabequellen
5. Select Layouts
6. Click on "+" to add a new layout
7. Search & Select "Rumänisch (Deutschland)" or "Rumänisch (Deutschland ohne Akzenttasten)"
8. Select "Rumänisch (Deutschland)" or "Rumänisch (Deutschland ohne Akzenttasten)", and move it to the top of the list.
9. Close
10. Start "Textbearbeitung" App or any other text editor or teminal window.
11. Using a German keyboard(physical keyboard), press the key combination ALT+s, ALT+t, SHIFT+ALT+s, SHIFT+ALT+t

Actual results:
ş, ţ, Ş and Ţ appear with cedillas. (U+015F, U+0163, U+015E, U+0162)

Expected results:
ș, ț, Ș and Ț to appear with commas. (U+0219, U+021B, U+0218, U+021A)

Package / Version Information:
user@host:~$ apt-cache policy keyboard-configuration
keyboard-configuration:
  Installiert: 1.205ubuntu1
  Installationskandidat: 1.205ubuntu1
  Versionstabelle:
 *** 1.205ubuntu1 500
        500 http://de.archive.ubuntu.com/ubuntu impish/main amd64 Packages
        500 http://de.archive.ubuntu.com/ubuntu impish/main i386 Packages
        100 /var/lib/dpkg/status