Record component/param bugs

[supersaiyansubtlety]

There are several bugs with record components/params:

• sometimes param javadocs show the class name instead of the param name
• sometimes param javadocs show null instead of the param name; sometimes this only happens for obfuscated params, but sometimes it happens for deobfuscated ones, too
• the obfuscated a param from the screenshot doesn't count against stats

I confirmed all behavior is the same between develop/2.7 and #307 (on 2.7 I checked out #307's new test input classes).