Shouldn't be suggested in JSX Elements & `JSXText`

[zardoy]

Postfixes should not be suggested inside JSX text/Elements. Failing examples:

;<>a.castas</>
;<p.promisify></p>
;<p test.not></p>
;<p className="thing.log"></p>

But support for JSXExpression should be preserved:

;<p hidden={showMe.not}>test{thing.castas}</p>

[ipatalas]

Good idea, I see TS AST supports this so this will be easy, thanks for suggestion.