Respect the EC multi-node license option

[sgalsaleh]

What this PR does / why we need it:

Adds the ability to limit Embedded Cluster installations to a single node.

Which issue(s) this PR fixes:

SC-121720

Does this PR require a test?

Yes

Does this PR require a release note?

* Adds the ability to limit Embedded Cluster installations to a single node.

Does this PR require documentation?

Single node:

Multi node:

License field icon:

[miaawong]

Looks great Salah! 🔥 Just a few suggestions but non blocking!

[miaawong]

we can leave out the ternary and use logical && operator here for improved readability

[miaawong]

optional but we can refactor this so we can separate presentation logic with step rendering and prevent multiple calls to getStepProps

interface StepProps {
  step: {
    id: string;
    title: string;
    children?: React.ReactNode;
  };
  stepProps: {
    icon: string;
    fontClass: string;
    textColor: string;
  };
}

const SidebarStep = ({ step, stepProps }: StepProps) => {
  const { icon, fontClass, textColor } = stepProps;
  
  return (
    <div
      key={step.id}
      className="tw-p-8 tw-shadow-[0_1px_0_#c4c8ca] tw-font-medium"
    >
      <div className="tw-flex">
        <Icon
          icon={icon}
          size={16}
          className="tw-mr-2"
        />
        <span
         className={`${fontClass} ${textColor} tw-flex-1`}
        >
          {step.title}
        </span>
      </div>
      {step.children}
    </div>
  );
};

[miaawong]

 {steps.map((step, index) => (
        <SidebarStep
          key={step.id}
          step={step}
          stepProps={getStepProps(index)}
        />
      ))}

[miaawong]

const steps = getSidebarSteps();

[laverya]

Go code looks fine, I'll leave the JS to Mia