Proposed change

Close the aiohttp session when the octoprint integration is unloaded, to prevent inotify leaks.

To reproduce the issue, shutdown your octoprint instance. within about 2 hours you will get warnings like

Failed to create a DNS resolver channel with automatic monitoring of resolver configuration changes, this usually means the system ran out of inotify watches. Falling back to socket state callback. Consider increasing the system inotify watch limit: Failed to initialize c-ares channel

Some of those warnings point to Octoprint, but others are also affected by this issue in the Octoprint integration.

For more details, including how we figured out what went wrong, see this issue thread: #144457

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes Failed to initialize c-ares channel #144457
• This PR is related to issue:
• Link to documentation pull request:
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

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