Fix using unique_ptr<> in the builds with wxUSE_INTL==0

Include standard library <memory> header file explicitly in the files
where std::unique_ptr<> is used instead of relying it on getting
implicitly included from the other headers, as this doesn't happen when
wxUSE_INTL==0.

Closes #23999.

src/common/fs_arc.cpp

@@ -8,6 +8,8 @@
 
 #include "wx/wxprec.h"
 
+#include <memory>
+
 #if wxUSE_FS_ARCHIVE
 
 #include "wx/fs_arc.h"

src/common/rendcmn.cpp

@@ -17,6 +17,7 @@
 
 #include "wx/wxprec.h"
 
+#include <memory>
 
 #ifndef WX_PRECOMP
     #include "wx/app.h"