chore: remove uuid dependency

[gameroman]

Note

Low Risk
Small dependency swap in test-only sandbox naming; supported by the package’s Node engine range (^18.18+).

Overview
Drops the uuid package (and @types/uuid) and uses Node’s built-in crypto.randomUUID() for temporary test sandbox directory names in createSandbox (src/fs.ts).

fs.test.ts mocks crypto.randomUUID instead of uuid.v4 so sandbox path behavior stays deterministic in tests.

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[cryptodev-2s]

This library has now been migrated into the core monorepo. This PR has been locked and this repo will be archived shortly. Going forward, releases of this library will only include changes made in the core repo.

• Please push this branch to core and open a new PR there.
• Optionally, add a link pointing to the discussion in this PR to provide context.

Tracked in MetaMask/core#10210.