Fix long name clamping and adjust related structures for compatibility

src/meshUtils.cpp

@@ -206,4 +206,10 @@ bool sanitizeUtf8(char *buf, size_t bufSize)
     }
 
     return replaced;
-}
+}
+
+void clampLongName(char *longName)
+{
+    longName[MAX_LONG_NAME_BYTES] = '\0';
+    sanitizeUtf8(longName, MAX_LONG_NAME_BYTES + 1);
+}