fix: DBaaS Advanced config state

[hana-akamai]

Description 📝

Undo watch refactor to DatabaseAdvancedConfigurationDrawer as it ended up causing a bunch of issues after getting merged. I also added some unit tests since there wasn't any before and Sakshi is looking into extending e2e coverage

No changeset needed since bugs hasn't made it into production yet

Scope 🚢

Upon production release, changes in this PR will be visible to:

• All customers
• Some customers (e.g. in Beta or Limited Availability)
• No customers / Not applicable

Target release date 🗓️

Next release

How to test 🧪

Prerequisites

(How to setup test environment)

• Have a mysql and postgres Database cluster

Reproduction steps

(How to reproduce the issue, if applicable)

• On the develop branch, edit an advanced config that has a dropdown, the value resets to the initial value instead of the selected value
• Switch toggle fields (such as pg_stat_monitor_enable) are not toggling
• On modifying configs that need a restart (e.g. pg_stat_monitor_enable), Save button isn't updating to "Save and Restart Service"

Verification steps

(How to verify changes)

• Checkout this PR preview link or checkout this PR
• Edit an advanced config that has a dropdown, the value should not reset to the initial value
• Switch toggle fields should be toggling
• On modifying configs that need a restart, the Save button should update to "Save and Restart Service"

pnpm test DatabaseAdvancedConfigurationDrawer

Author Checklists

As an Author, to speed up the review process, I considered 🤔

👀 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

• I have read and considered all applicable items listed above.

As an Author, before moving this PR from Draft to Open, I confirmed ✅

• All tests and CI checks are passing
• TypeScript compilation succeeded without errors
• Code passes all linting rules

[linode-gh-bot]

Cloud Manager UI test results

🔺 1 failing test on test run #2 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
1 Failing	865 Passing	11 Skipped	37m 41s

Details

Failing Tests
	Spec	Test
❌	quotas-storage.spec.ts	Cloud Manager Cypress Tests→Quota workflow tests→Quota storage table » Quotas and quota usages display properly

Troubleshooting

Use this command to re-run the failing tests:

pnpm cy:run -s "cypress/e2e/core/account/quotas-storage.spec.ts"

[smans-akamai]

Verified steps for UI behavior and unit tests!