[#25037]yugabyted: Node starts with hostname as advertise_address instead of private IP

Summary:
When starting a node, it starts with hostname as the advertise_address instead of the private IP of the machine.
This behaviour is due to the recent commit to support hostname-based docker deployments.
Fixing the issue.
Jira: DB-14171

Test Plan: Manual Testing

Reviewers: nikhil, djiang

Reviewed By: djiang

Subscribers: yugabyted-dev, sgarg-yb

Differential Revision: https://phorge.dev.yugabyte.com/D40181

Author: gargsans-yb

bin/yugabyted

@@ -7555,8 +7555,7 @@ class ControlScript(object):
 
             if args.advertise_address is None:
                 if not self.configs.saved_data.get("advertise_address"):
-
-                    if str(os.path.exists("/.dockerenv")):
+                    if os.path.exists("/.dockerenv"):
                             args.advertise_address = self.find_hostname_of_node()
                     else:
                         if OS_NAME == "Linux":