chore: formatted examples/query

[andrerovee]

Format all query examples using Black to ensure consistent code style.

Changes included:

Formatted all Python query example files under examples/query
Updated CHANGELOG.md with changelog entry
Related issue(s):
Fixes #1082

[github-actions]

Hi, this is MergeConflictBot.
Your pull request cannot be merged because it contains merge conflicts.

Please resolve these conflicts locally and push the changes.

To assist you, please read:

• Resolving Merge Conflicts
• Rebasing Guide

Thank you for contributing!

From the Hiero Python SDK Team

[exploreriii]

Hi @andrerovee sorry about this, please frequently fetch from upstream and rebase because we update the python sdk frequently, this will help avoid conflicts :)

[AntonioCeppellini]

Nice work! :D

[github-actions]

Hello, this is the Office Hour Bot.

This is a reminder that the Hiero Python SDK Office Hours are scheduled in approximately 4 hours (14:00 UTC).

This session provides an opportunity to ask questions regarding this Pull Request or receive assistance from a maintainer.

Details:

• Time: 14:00 UTC
• Join Link: Zoom Meeting

Disclaimer: This is an automated reminder. Please verify the schedule here to be notified of any changes.