config: add DEBUG_ONLY -logratelimit

Use -nologratelimit by default in functional tests if the bitcoind
version supports it.

Co-Authored-By: stickies-v <stickies-v@protonmail.com>

test/functional/test_framework/test_node.py

@@ -136,6 +136,8 @@ class TestNode():
             self.args.append("-logsourcelocations")
         if self.version_is_at_least(239000):
             self.args.append("-loglevel=trace")
+        if self.version_is_at_least(299900):
+            self.args.append("-nologratelimit")
 
         # Default behavior from global -v2transport flag is added to args to persist it over restarts.
         # May be overwritten in individual tests, using extra_args.