chore: Update user readiness spinner text with estimated wait time

[JohnPhamous]

No description provided.

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
package.json	100% smaller
src/lib/tokens.ts	100% smaller
src/lib/clusters/clusters.tsx	89% smaller

[greptile-apps]

PR Summary

Updated the loading message in UserAddedDisplay component to provide users with a clearer expectation of provisioning time.

• Modified text in src/lib/clusters/clusters.tsx to specify "this should take about 30 seconds..." during user provisioning wait state
• Improves UX by setting clear timing expectations for cluster user creation process

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