Fix the error 'output device not set for a chonicles dynamic sink'

beacon_chain/beacon_node.nim.cfg

@@ -1,2 +1,9 @@
 -d:"chronicles_runtime_filtering=on"
 
+@if testnet_docker_node:
+  -d:"chronicles_sinks=json"
+  -d:"withoutPrompt"
+@else:
+  -d:"chronicles_default_output_device=dynamic"
+@end
+

nim.cfg

@@ -11,18 +11,12 @@
   --passL:"-Wl,--stack,8388608"
   # https://github.com/nim-lang/Nim/issues/4057
   --tlsEmulation:off
+
   # The dynamic Chronicles output currently prevents us from using colors on Windows
   # because these require direct manipulations of the stdout File object.
   -d:"chronicles_colors=off"
 @end
 
-@if testnet_docker_node:
-  -d:"chronicles_sinks=json"
-  -d:"withoutPrompt"
-@else:
-  -d:"chronicles_default_output_device=dynamic"
-@end
-
 --threads:on
 --opt:speed
 --excessiveStackTrace:on