fix(l10n): Update Sanskrit translations

Currently translated at 46.4% (13 of 28 strings)

Translation: Pachli/Core/Preferences : Main
Translate-URL: https://hosted.weblate.org/projects/pachli/corepreferences-main/sa/

core/preferences/src/main/res/values-sa/strings.xml

@@ -12,4 +12,5 @@
     <string name="pref_main_nav_position_option_bottom">नितलम्</string>
     <string name="pref_show_self_username_always">सर्वदा</string>
     <string name="pref_show_self_username_never">न कदापि</string>
+    <string name="pref_tab_contents_icon_only">प्रतीकः एव</string>
 </resources>