Enhance experiment configuration UI with improved metric selection and clearer optimizer handling

[Irozuku]

This pull request introduces several improvements to the experiment configuration UI, focusing on enforcing required fields for model optimization, enhancing the user experience with form controls, and simplifying state management for selected metrics and optimizers. The most important changes are grouped below:

Validation and Required Fields

• Added logic to ensure that if a model has optimizers, selecting a goal metric is required before proceeding to the next step in the experiment modal. The "Next" button is now enabled only when all required fields are filled.
• Updated the ModelsTableSelectMetric component to accept a required prop, display an error when not filled, and use the goal_metric directly from each model row for validation. [1] [2]

Conditional Rendering

• Updated the models table to show a message ("No hyperparameter optimization") in the metric column when a model does not have optimizers, improving clarity for users.

[cristian-tamblay]

I hate the "Optimazer" misspell, but if it works it works