Ansible-Lint uppercases handler names but ignores the notifications

[heuwerk]

Summary

when running ansible-lint --fix the names of the handler tasks are correctly renamed to begin with upper case letter.
The Problem is that the notify: my handler remains unchanged, so the next run of the Playbook will fail.

Issue Type

• Bug Report

OS / ENVIRONMENT

ansible-lint --version
ansible-lint 24.2.0 using ansible-core:2.15.3 ansible-compat:4.1.11 ruamel-yaml:0.18.5 ruamel-yaml-clib:0.2.8

• ansible installation method: OS package
• ansible-lint installation method: pip

STEPS TO REPRODUCE

1. Create a playbook, that calls a handler but the name and notify of the handler is lowercase (see example playbook below)
2. Run ansible-lint --fix on the playbook
3. Run ansible-playbook playbook.yaml and it fails

---
- name: Test Playbook
  hosts: localhost
  tasks:
    - name: Task that always changes
      ansible.builtin.debug:
        msg: "I always change!"
      changed_when: true
      notify: my handler

  handlers:
    - name: my handler
      ansible.builtin.debug:
        msg: "I never run :("

Desired Behavior

ansible-lint should uppercase the handler name and the notify call, so the playbook keeps working after running ansible-lint --fix

Possible security bugs should be reported via email to security@ansible.com

Actual Behavior

ERROR: The requested handler 'my handler' was not found in either the main handlers list nor in the listening handlers list

Please give some details of what is happening. Include a minimum complete
verifiable example with:

• minimized playbook to reproduce the error
• the output of running ansible-lint including the command line used
• if you're getting a stack trace, also the output of
  ansible-playbook --syntax-check playbook

---
- name: Test Playbook
  hosts: localhost
  tasks:
    - name: Task that always changes
      ansible.builtin.debug:
        msg: "I always change!"
      changed_when: true
      notify: my handler

  handlers:
# Handler after ansible-lint --fix run
    - name: My handler
      ansible.builtin.debug:
        msg: "I never run :("

$ ansible-playbook playbook.yaml
PLAY [Test Playbook]

TASK [Gathering Facts]
ok: [localhost]

TASK [Task that always changes]*******************
ERROR: The requested handler 'my handler' was not found in either the main handlers list nor in the listening handlers list