meson: ensure non-debug builds will use proper configuration

meson will set add -DHYPRLAND_DEBUG to CXXFLAGS during compilation of
debug builds. this avoids NDEBUG issues with wlroots and ensures asserts
will also work on release builds.

src/debug/HyprCtl.cpp

@@ -114,6 +114,9 @@ std::string versionRequest() {
 #ifndef NDEBUG
     result += "debug\n";
 #endif
+#ifdef HYPRLAND_DEBUG
+	result += "debug\n";
+#endif
 #ifdef NO_XWAYLAND
     result += "no xwayland\n";
 #endif