fix: [UIE-10338] marketplace fixes

[tvijay-akamai]

Description 📝

Implemented change requests related to marketplace.

Changes 🔄

• In contact sales form, for Additional email addresses link, added a plus icon and changed label to Click to add a second, additional email address.
• Increased category and type dropdown width and increased vertical height for the popper so that scroll comes when there is very less vertical space in the viewport.
• Updated empty state messages in dropdowns.
• Changed submit button behavior in contact sales form to keep the button disabled until all the required fields are correctly filled.

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 🗓️

March end

How to test 🧪

• Go to Partner Referrals for the side menu and check the Category and types autocomplete.
• Then go to details of a product and click on contact sales form, check the submit tooltip text, add additional email and submit enable behavior.

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

[harsh-akamai]

Changes looks good ✅
Need to fix the failing unit test in Contact Sales Drawer

[linode-gh-bot]

Cloud Manager UI test results

🔺 2 failing tests on test run #3 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
2 Failing	878 Passing	11 Skipped	42m 52s

Details

Failing Tests
	Spec	Test
❌	object-storage.e2e.spec.ts	Cloud Manager Cypress Tests→object storage end-to-end tests » can create and delete object storage buckets
❌	lke-create.spec.ts	Cloud Manager Cypress Tests→LKE Cluster Creation with LKE-E→shows the LKE-E flow with the feature flag on » creates an LKE-E cluster with the account capability

Troubleshooting

Use this command to re-run the failing tests:

pnpm cy:run -s "cypress/e2e/core/objectStorage/object-storage.e2e.spec.ts,cypress/e2e/core/kubernetes/lke-create.spec.ts"