Middle Relay fixes

Co-Authored-By: brekotis <93345790+brekotis@users.noreply.github.com>

src/config/defaults.rs

@@ -273,6 +273,10 @@ pub(crate) fn default_me2dc_fallback() -> bool {
     true
 }
 
+pub(crate) fn default_me2dc_fast() -> bool {
+    false
+}
+
 pub(crate) fn default_keepalive_interval() -> u64 {
     8
 }