fix(cosmos)!: use core bootstrap by default

Separate demo/test bootstrap from production.

BREAKING CHANGE: RUN protocol etc. is not started by default.

To start RUN protocol, Pegasus, etc., use:

CHAIN_BOOTSTRAP_VAT_CONFIG=@agoric/vats/decentral-demo-config.json \
  agoric start local-chain

Stay tuned for a mechanism to turn them on via governance.

golang/cosmos/x/swingset/types/default-params.go

@@ -54,5 +54,5 @@ var (
 		NewStringBeans(BeansPerXsnapComputron, DefaultBeansPerXsnapComputron),
 	}
 
-	DefaultBootstrapVatConfig = "@agoric/vats/decentral-config.json"
+	DefaultBootstrapVatConfig = "@agoric/vats/decentral-core-config.json"
 )