Add a warning on HW neurons staking step 2 #35317

Job	Run time
build	4m 46s
test-playwright-e2e-shard-2-of-2	6m 40s
test-upgrade-downgrade	1m 59s
Upload assets	16s
Same wasms for mainnet and local	10s
test-playwright-e2e-shard-1-of-2	5m 33s
aggregator_test	6m 30s
test-rest	3m 13s
test-test-account-api	1m 10s
test-upgrade-stable	1m 29s
build-pass	4s
	31m 50s

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