CppunitTest_sw_uiwriter: use gb_CppunitTest_use_rdb

I can't easily see what component is missing for SVM saving, and we do
the same in CppunitTest_sw_htmlimport already, so why bother.

Change-Id: Iba917e211fc721f8e275b3ce04a0e02c0759485b
fdo#87448 EnhancedCustomShape2d: fix handling of scaled ARCANGLETO commands

Change-Id: I7daf52a60e3fac8d9f86b464e86af60e0495fcb1