fix: [UIE-8009] - DBaaS backups disable invalid dates

[corya-akamai]

Description 📝

Fixes for DBaaS Backups tabs

Changes 🔄

List any change relevant to the reviewer.

• Disable dates when there are no backups to restore from
• Avoid unnecessary API call
• Remove custom label

Target release date 🗓️

9/30/24

How to test 🧪

Prerequisites

• Managed Databases Beta account capability

Reproduction steps

• Create a new DB
• Navigate to Backups while it's still provisioning, or just activated.

Verification steps

• You cannot select a date
• An info banner displays

As an Author I have considered 🤔

Check all that apply

• 👀 Doing a self review
• ❔ Our contribution guidelines
• 🤏 Splitting feature into small PRs
• ➕ Adding a changeset
• 🧪 Providing/Improving test coverage
• 🔐 Removing all sensitive information from the code and PR description
• 🚩 Using a feature flag to protect the release
• 👣 Providing comprehensive reproduction steps
• 📑 Providing or updating our documentation
• 🕛 Scheduling a pair reviewing session
• 📱 Providing mobile support
• ♿ Providing accessibility support

[github-actions]

Coverage Report: ✅
Base Coverage: 87.13%
Current Coverage: 87.13%

[coliu-akamai]

✅ confirmed info banner displays and am unable to select dates when DB is just provisioning/activated

A couple of small thoughts/things I noticed:

• On viewports from 960 to ~1040px, there's some overlap in the time and month/year toggle - not sure how many people have screens this size, but I just saw this when I had my dev tools open:
  

• edit: saw the comment in the code that this date picker will be switched out soon 👍

• is it possible to disable the month and year picker if everything else is disabled (not sure how this would affect accessibility though)?

[cpathipa]

Approving, failed nodebalancers-create-in-complex-form test passed in local