DerivedPathTest: disable prop_legacy_round_rip until fixed

(cherry picked from commit c58202c6f9)

src/libstore-tests/derived-path.cc

@@ -79,9 +79,14 @@ TEST_F(DerivedPathTest, built_built_xp) {
 
 #ifndef COVERAGE
 
+/* TODO: Disabled due to the following error:
+
+       path '00000000000000000000000000000000-0^0' is not a valid store path:
+       name '0^0' contains illegal character '^'
+*/
 RC_GTEST_FIXTURE_PROP(
     DerivedPathTest,
-    prop_legacy_round_rip,
+    DISABLED_prop_legacy_round_rip,
     (const DerivedPath & o))
 {
     ExperimentalFeatureSettings xpSettings;