Log: fix some parts of messages not being discarded early

`m_IsNoOp` was introduced to avoid building up log messages that will later be
discarded, like debug messages if no debug logging is configured. However, it
looks like the template operator<< implemented in the header file was forgotten
when adding this feature, all other places writing into `m_Buffer` already have
an if guard like added by this commit.

lib/base/logger.hpp

@@ -121,7 +121,10 @@ class Log
 	template<typename T>
 	Log& operator<<(const T& val)
 	{
-		m_Buffer << val;
+		if (!m_IsNoOp) {
+			m_Buffer << val;
+		}
+
 		return *this;
 	}