fix(samples): update TemplateMark, Concerto Model, and Preview Data on selection

[surya4419]

Closes #317

This PR fixes the issue where selecting a sample from the dropdown did not update the TemplateMark, Concerto Model, and Preview Data sections. The problem was caused by improper state synchronization in the useUndoRedo hook.

Changes

• Updated useUndoRedo hook to properly handle initialValue updates from the store.
• Added a useEffect to ensure the editor state resets and updates correctly when a new sample is selected.
• Ensured that changes propagate to all dependent components.

Screenshots or Video

Template.Playground.-.Google.Chrome.2025-03-22.11-46-48.mp4

Related Issues

• Issue Samples Dropdown Selection Does Not Update TemplateMark, Concerto Model, and Preview Data #317

Author Checklist

• Ensure you provide a DCO sign-off for your commits using the --signoff option of git commit.
• Vital features and changes captured in unit and/or integration tests.
• Commit messages follow AP format.
• Extend the documentation, if necessary.
• Merging to main from fork:branchname.

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[surya4419]

@DianaLease @sanketshevkar , Could you review my PR? It fixes state sync issues in useUndoRedo, ensuring TemplateMark, Concerto Model, and Preview Data update when selecting a sample. Let me know if you have any feedback!