fix JSX expression indentation bug

[helixbass]

Fixes #5055

So now eg this compiles:

<div>
  {someCondition &&
    <span />
  }
</div>

Basically it was choking on the closing empty INDENT/OUTDENT pair at the end of the parsed tokens inside the nested {...} expression

So in matchWithInterpolations(), similar to the existing tweaking of nested to remove a leading TERMINATOR, added a tweaking to remove a closing INDENT/OUTDENT pair

[GeoffreyBooth]

How about a test that confirms that this works with a few other types of line continuators, besides just &&? And what if the next line is at the same indentation, and what if it’s normal code rather than a CSX tag?

[helixbass]

@GeoffreyBooth sure, added more tests with those variants