test(storage-browser): add create-folder e2e success case

[ashwinkumar6]

Description of changes

Add additional success case for folder creation. Folder deletion isn't currently supported so we're creating folders with a random name inside public/DoNotDeleteThisFolder_CanDeleteAllChildren

Description of how you validated changes

Tested locally

Checklist

• [x] Have read the Pull Request Guidelines
• [x] PR description included
• [x] yarn test passes and tests are updated/added
• [x] PR title and commit messages follow conventional commit syntax
• [ ] If this change should result in a version bump, changeset added (This can be done after creating the PR.) This does not apply to changes made to docs, e2e, examples, or other private packages.

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Latest commit: d6956dc06dfd3202375ca1c4f1b6350da2eb3fc5

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