test: [M3-7287] - Add new test for the NodeBalancer Create flow for multiple nodes and multiple configs

[AzureLatte]

Description 📝

Add new Cypress tests for the NodeBalancer Create flow to test the submission of multiple nodes and multiple configs.

Changes 🔄

• Add new tests in nodebalancers/nodebalancers-create-in-complex-form.spec.ts

How to test 🧪

yarn cy:run -s "cypress/e2e/core/nodebalancers/nodebalancers-create-in-complex-form.spec.ts"

As an Author I have considered 🤔

Check all that apply

• [x] 👀 Doing a self review
• [ ] ❔ Our contribution guidelines
• [ ] 🤏 Splitting feature into small PRs
• [x] ➕ 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[bot]]

Coverage Report: ✅
Base Coverage: 82.62%
Current Coverage: 82.62%