Connects to #1906: Disabled UI for criteria

[h-tong]

No description provided.

[bryanwulf]

@h-tong Items to discuss/address...
In multiple files:

• check/ensure that variables (like this.props.unusedCriteria) are defined before accessing "child" properties/methods (like indexOf())

In src/clincoded/static/components/variant_central/index.js:

• add unusedCriteria to state (vs. setting the default with a const)

In src/clincoded/static/components/variant_central/interpretation/segregation.js:

• update comments for criteriaGroup8 function (to match modified argument name)

In src/clincoded/static/components/variant_central/interpretation/shared/form.js:

• avoid reuse of disableEvalForm (argument and variable name) in renderEvalFormSection()
• avoid use of this.props in renderEvalFormSection() (not part of a component)

[bryanwulf]

Suggested change

	* @param {boolean} unusedCriteria - An array of criteria that are not active
	* @param {array} unusedCriteria - An array of criteria that are not active