Accessible Descriptions are supposed to be human text (and translated)

Change-Id: I75e839d9276e98af0b255c2e40f30c42a700ff29
Reviewed-on: https://gerrit.libreoffice.org/69935
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

svtools/source/control/valueacc.cxx

@@ -1600,7 +1600,15 @@ sal_Int16 SAL_CALL SvtValueSetAcc::getAccessibleRole()
 OUString SAL_CALL SvtValueSetAcc::getAccessibleDescription()
 {
     ThrowIfDisposed();
-    return OUString( "ValueSet" );
+    const SolarMutexGuard aSolarGuard;
+    OUString              aRet;
+
+    if (mpParent)
+    {
+        aRet = mpParent->GetAccessibleDescription();
+    }
+
+    return aRet;
 }