Make prefix optional, at the moment it always renders prefix

[shivanshuit914]

@BecioProton @georgeeker

Make prefix optional, at the moment it always renders prefix.

[HughePaul]

I'd you specify null or undefined it shouldn't get rendered. If you specify a string, even if empty, it will still render that empty string as that is what you have asked the component to do

[shivanshuit914]

I'd you specify null or undefined it shouldn't get rendered. If you specify a string, even if empty, it will still render that empty string as that is what you have asked the component to do

Thanks for the feedback. I have added test for undefined and empty string.

I have tested it in my local env.

{{ hmpoText(ctx, {
      id: "question",
      name: "question",
      label: {
        text: question.label,
        classes: "govuk-label--m"
      },
      hint: {
        text: question.hint
      },
      classes: "govuk-input--width-5"
    }) }}
    

[AmritSidhu]

@HughePaul are you able to get this work merged in?