UseSWIG: reintroduce legacy target name management

Fixes: #18140

Tests/UseSWIG/BasicConfiguration.cmake

@@ -58,6 +58,7 @@ if(${language} MATCHES lua)
   set(SWIG_LANG_LIBRARIES ${LUA_LIBRARIES})
 endif()
 
+set(UseSWIG_TARGET_NAME_PREFERENCE STANDARD)
 unset(CMAKE_SWIG_FLAGS)
 
 set (CMAKE_INCLUDE_CURRENT_DIR ON)

Tests/UseSWIG/ModuleVersion2/CMakeLists.txt

@@ -16,6 +16,7 @@ else()
   set (PS ":")
 endif()
 
+set(UseSWIG_TARGET_NAME_PREFERENCE STANDARD)
 set (UseSWIG_MODULE_VERSION 2)
 unset(CMAKE_SWIG_FLAGS)
 

Tests/UseSWIG/MultipleModules/CMakeLists.txt

@@ -19,6 +19,7 @@ else()
   set (PS ":")
 endif()
 
+set(UseSWIG_TARGET_NAME_PREFERENCE STANDARD)
 unset(CMAKE_SWIG_FLAGS)
 
 set_property(SOURCE "../example.i" PROPERTY CPLUSPLUS ON)

Tests/UseSWIG/MultiplePython/CMakeLists.txt

@@ -17,6 +17,7 @@ else()
   set (PS ":")
 endif()
 
+set(UseSWIG_TARGET_NAME_PREFERENCE STANDARD)
 unset(CMAKE_SWIG_FLAGS)
 
 set_property(SOURCE "../example.i" PROPERTY CPLUSPLUS ON)