Refactor Arraylist Component

[ghost]

Setup

• Rancher version: 2.7
• Browser type & version: All

Describe the bug
Refactor: refactor arraylist: valueMultiline looks like it's not used anywhere and should be removed. Should use labeled-input as fallback input component instead of basic html input for better extensibility (specifically as regards to validation rules).

Result

Expected Result
No regressions should be introduced by this, this refactor is its own issue simply because of the number of places in which it is used and thus it's relatively higher risk and testing overhead.

Context
Refactoring our most commonly used components should reduce development overhead over time and make the code-base friendlier for new developers.