Toponaming: Add missing TNP element name code; rough in more TNP tests (#14561)

* Add missing TNP element name code; rough in more TNP tests

* Update ElementNamingUtils.cpp

---------

Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

src/App/ElementNamingUtils.cpp

@@ -56,6 +56,11 @@ std::string Data::noElementName(const char *name) {
 }
 
 const char *Data::findElementName(const char *subname) {
+#ifdef FC_USE_TNP_FIX
+    // skip leading dots
+    while(subname && subname[0] == '.')
+        ++subname;
+#endif
     if(!subname || !subname[0] || isMappedElement(subname))
         return subname;
     const char *dot = strrchr(subname,'.');