[Bug]: stateless mode is not working since v0.13.1

[gudim]

Prerequisites

• I have searched the existing issues to make sure this bug has not already been reported.
• I have checked the README for relevant information.

Bug Description

Last version when --stateless is working is 0.13.0 all following versions all run ignoring this options

0.13.1 on get tools return Bad Request: Missing session ID

Steps to Reproduce

1. start pod on kubernetes with image version >0.13.0
2. do a get tool without sessionid
3. see the error

here is the k3s deployemnt.yaml

Here is minimal deployment for k3s

apiVersion: apps/v1
kind: Deployment
metadata:
name: mcp-atlassian-latest
labels:
app: mcp-atlassian-latest
spec:
replicas: 1
selector:
matchLabels:
app: mcp-atlassian-latest
template:
metadata:
labels:
app: mcp-atlassian-latest
spec:
containers:
- name: mcp-atlassian
image: ghcr.io/sooperset/mcp-atlassian:0.13.1
args:
- "--transport"
- "streamable-http"
- "--host"
- "0.0.0.0"
- "--port"
- "8000"
- "--path"
- "/mcp"
- "--stateless" # Stateless mode - no session ID required
- "-v"
ports:
- containerPort: 8000
envFrom:
- secretRef:
name: mcp-atlassian-i1-env

Expected Behavior

I expect the tool list get loaded without providing sessionid

/app/.venv/lib/python3.10/site-packages/mcp_atlassian/servers/main.py:312: DeprecationWarning: Accessing .settings on a FastMCP instance is deprecated. Use the global fastmcp.settings instead.
mcp_path = self.mcp_server_ref.settings.streamable_http_path.rstrip("/")
INFO: 10.42.0.1:53723 - "POST /mcp HTTP/1.1" 200 OK
INFO - mcp.server.lowlevel.server - Processing request of type ListToolsRequest
INFO - mcp.server.streamable_http - Terminating session: None

Actual Behavior

INFO:     Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)
INFO - mcp.server.streamable_http_manager - Created new transport with session ID: 6373375741f44349a3eaf4cb387e0bc3
INFO:     10.42.0.1:9573 - "POST /mcp HTTP/1.1" 400 Bad Request

mcp-atlassian Version

0.13.0

Installation Method

Other

Operating System

Linux (Specify distribution below if relevant)

Python Version

3.10

Atlassian Instance Type

Jira Server / Data Center

Client Application

Java

Additional Context

I believe issue related to fact that this been fixed

/app/.venv/lib/python3.10/site-packages/mcp_atlassian/servers/main.py:312: DeprecationWarning: Accessing .settings on a FastMCP instance is deprecated. Use the global fastmcp.settings instead.