Rename maintenance events to maintenance notifications.

[petyaslavova]

Pull Request check-list

Please make sure to review and check all of these items:

• Do tests and lints pass with this change?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

[Copilot]

Pull Request Overview

This PR renames "maintenance events" to "maintenance notifications" throughout the codebase to better reflect that these are notifications about maintenance activities rather than the events themselves.

Key changes:

• Renamed classes, methods, and variables containing "maintenance events" or "maint events" to use "maintenance notifications" or "maint notifications"
• Updated configuration parameter names from "relax_timeout" to "relaxed_timeout"
• Updated comments and documentation to reflect the new terminology

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/test_scenario/test_hitless_upgrade.py	Updated test fixtures and variable names to use maintenance notifications terminology
tests/test_scenario/conftest.py	Renamed configuration helper functions and parameters to use notifications terminology
tests/test_maintenance_events_handling.py	Comprehensive rename of test class names, methods, and variables from events to notifications
tests/test_maintenance_events.py	Updated test classes and methods to use notification terminology throughout
redis/maintenance_events.py	Core rename of classes, methods, and configuration from events to notifications
redis/connection.py	Updated connection handling code to use notifications terminology and relaxed_timeout
redis/client.py	Updated Redis client to use maint_notifications_config parameter
redis/_parsers/base.py	Updated parser mapping and method names to use notifications terminology

Comments suppressed due to low confidence (3)

tests/test_scenario/conftest.py:1

• The comment on line 958 is inconsistent with the comment on line 1010. Line 958 says connections will 'also receive the moving notification' but line 1010 says they 'will also receive the moving notification' - the context suggests line 958 should say 'will not receive the migrating notification' based on the surrounding code about disabled notifications.

import json

tests/test_maintenance_events_handling.py:1

• [nitpick] The comment text is duplicated identically on lines 545 and 649. Consider making the comments more specific to their context or removing the duplication.

import socket

tests/test_maintenance_events_handling.py:1

• [nitpick] The comment text is duplicated identically on lines 545 and 649. Consider making the comments more specific to their context or removing the duplication.

import socket

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}