[Supplier] Refactor/non custodial staking tests

Makefile

@@ -813,7 +813,7 @@ warn_message_local_stress_test: ## Print a warning message when kicking off a lo
 	@echo "|                                                                                               |"
 	@echo "|     1. Review the # of suppliers & gateways in 'load-testing/localnet_loadtest_manifest.yaml' |"
 	@echo "|     2. Update 'localnet_config.yaml' to reflect what you found in (1)                         |"
-	@echo "|     	DEVELOPER_TIP: If you're operating off defaults, you'll likely need to update to 3     |"
+	@echo "|     DEVELOPER_TIP: If you're operating off defaults, you'll likely need to update to 3        |"
 	@echo "|                                                                                               |"
 	@echo "|     TODO_DOCUMENT(@okdas): Move this into proper documentation w/ clearer explanations        |"
 	@echo "|                                                                                               |"
@@ -827,7 +827,7 @@ warn_flaky_tests: ## Print a warning message that some unit tests may be flaky
 	@echo "|                                                                                               |"
 	@echo "|     1. Our unit / integration tests are far from perfect & some are flaky                     |"
 	@echo "|     2. If you ran 'make go_develop_and_test' and a failure occurred, try to run:              |"
-	@echo "|     	'make test_all' once or twice more                                                     |"
+	@echo "|     'make test_all' once or twice more                                                        |"
 	@echo "|     3. If the same error persists, isolate it with 'go test -v ./path/to/failing/module       |"
 	@echo "|                                                                                               |"
 	@echo "+-----------------------------------------------------------------------------------------------+"