Make generic control of core actually generic

[dorthrithil]

Currently the only element that is working in cds-control is an input. Actually using a custom generic control element like in the example below leads to an error.

<cds-control>
  <label>label text</label>
  <my-custom-control></my-custom-control>
  <cds-control-message>message text</cds-control-message>
</cds-control>

Uncaught (in promise) Error: input element is missing

[coryrylan]

This was recently fixed, and not yet published to the docs. You can add any generic content by adding the cds-control attirbute to the element replacing the input.

<cds-control>
  <label>label</label>
  <p  cds-control cds-text="body" cds-layout="m-t:sm">
    Use the <code cds-text="code">cds-control</code> attribute to place generic content into a control layout.
  </p>
  <cds-control-message>control message</cds-control-message>
</cds-control>

• https://stackblitz.com/edit/typescript-i9brpq?file=index.html
• fix: core control docs inline content #5572