rpc: use minimal mode by default (backport #22734) (#22879)

* rpc: use minimal mode by default

(cherry picked from commit eac4a6df68)

# Conflicts:
#	local-cluster/tests/local_cluster.rs

* test-validator-bin: reinstate full rpc method set

Co-authored-by: Trent Nelson <trent@solana.com>

multinode-demo/bootstrap-validator.sh

@@ -129,6 +129,7 @@ args+=(
   --no-poh-speed-test
   --no-os-network-limits-test
   --no-wait-for-vote-to-start-leader
+  --full-rpc-api
 )
 default_arg --gossip-port 8001
 default_arg --log -