[fix] Aim web ui integration in jupyter/colab

[larissapoghosyan]

The PR #2696 added more robust mechanism of initializing aim server, checking the health, and only then enabling the web ui. However, there's no endpoint /projects/status/ now as part of api, so currently aim web ui integration for jupyter always fails.

This PR:

• Relies on status code of /projects endpoint instead
• Removes unnecessary delay in case of failure (for loop always calling sleep even if no tries left)
• Implements delayed retries with exponential backoff, and lets it to wait longer, as some google colab machines are slow and take at least 10-15 seconds to start the aim server.

Possibly addresses #2672 and #3123

Tested on both local jupyter notebooks, and google colab

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[CLAassistant]

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[alberttorosyan]

@larissapoghosyan, thanks for your contribution!
Approving this PR since the failure of code style checks is not related to this change.