Runtime Ownership hardened

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

src/config/defaults.rs

@@ -780,6 +780,10 @@ pub(crate) fn default_me_reinit_singleflight() -> bool {
     true
 }
 
+pub(crate) fn default_me_reinit_max_concurrency() -> usize {
+    2
+}
+
 pub(crate) fn default_me_reinit_trigger_channel() -> usize {
     64
 }