…ction that is passed a reference to the model to determine disabled logic based on the model.

• Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  Implements the ability to disable individual radio buttons with a boolean or function return.

• What is the current behavior? (You can also link to an open issue here)
  None

• What is the new behavior (if this is a feature change)?
  When defining a radio button, the values can have a name, value and disabled property. The disabled property can either be a boolean or a function.

When an item is disabled, the input's "disabled" property is set to true.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)
  It should not

• Other information:
  Refer to Disabling specific radio options #551