CF SDK: Fix layout and member list actions

[iAmmar7]

Description

• Fix getLayout, setLayout, and getMembers action APIs.
• Integrate the usage in the playground.

Type of change

• [ ] Internal refactoring
• [x] Bug fix (bugfix - non-breaking)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Code snippets

In case of new feature or breaking changes, please include code snippets.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: e6c4a4242774413dcf917c7a6d93762de35e3a44

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@signalwire/js	Patch

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