refactor: migrate from hash* to Object.hash*

[werainkhatri]

Description

Migrates to Object.hash and Object.hashAll from hashValues and hashList respectively. This removes the dependency to flutter/widgets or flutter/material.dart from a few plugins.

Related Issues

flutter/flutter#85431

Checklist

Before you create this PR confirm that it meets all requirements listed below by checking the relevant checkboxes ([x]).
This will ensure a smooth and quick review process. Updating the pubspec.yaml and changelogs is not required.

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• My PR includes unit or integration tests for all changed/updated/fixed behaviors (See Contributor Guide).
• All existing and new tests are passing.
• I updated/added relevant documentation (doc comments with ///).
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Breaking Change

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• Yes, this is a breaking change.
• No, this is not a breaking change.

[nilsreichardt]

I think you need to remove the version increment and the notes in the changelog, because they are generated via Melos:

We push releases manually, using Melos to take care of the hard work.

Changelogs and version updates are automatically updated by a project maintainer (via Melos). The new version is automatically generated via the commit types and changelogs via the commit messages.

https://github.com/firebase/flutterfire/blob/master/CONTRIBUTING.md#the-release-process

[nilsreichardt]

You can just run git revert 7ce478aaf64befa878fd3e11ce2c4d5d14788300 👍

[werainkhatri]

I think you need to remove the version increment and the notes in the changelog, because they are generated via Melos:

oh that's neat, reverting...