Use selected network controller for Snaps

[Mrtenz]

Explanation

This removes some checks in the SelectedNetworkController which disallow a Snap from using their own network, and default to the globally selected network. After this change, Snaps will be able to select their own network just like websites.

References

Related to MetaMask/MetaMask-planning#2938.

Changelog

@metamask/selected-network-controller

• CHANGED: Allow Snaps to change own network

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've highlighted breaking changes using the "BREAKING" category above as appropriate

[Mrtenz]

@metamaskbot publish-preview

[github-actions]

Preview builds have been published. See these instructions for more information about preview builds.

Expand for full list of packages and versions.

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