fix: align breaking of instanceof with binary expression in assignments

[jtkiesel]

What changed with this PR:

Breaking of instanceof expressions in assignment expressions is aligned with that of binary expressions. This aligns behavior more closely with Prettier JS/TS, as it treats instanceof expressions as binary expressions.

Example

Input

aaaaaaaaaaaaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb instanceof
  Cccccccccccccccccccc cccccccccccccccccccc;

aaaaaaaaaa = bbbbbbbbbb instanceof Cccccccccc cccccccccc
  ? dddddddddd
  : eeeeeeeeee;

var aaaaaaaaaaaaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb instanceof
  Cccccccccccccccccccc cccccccccccccccccccc;

var aaaaaaaaaa = bbbbbbbbbb instanceof Cccccccccc cccccccccc
  ? dddddddddd
  : eeeeeeeeee;

Output

aaaaaaaaaaaaaaaaaaaa =
  bbbbbbbbbbbbbbbbbbbb instanceof Cccccccccccccccccccc cccccccccccccccccccc;

aaaaaaaaaa =
  bbbbbbbbbb instanceof Cccccccccc cccccccccc ? dddddddddd : eeeeeeeeee;

var aaaaaaaaaaaaaaaaaaaa =
  bbbbbbbbbbbbbbbbbbbb instanceof Cccccccccccccccccccc cccccccccccccccccccc;

var aaaaaaaaaa =
  bbbbbbbbbb instanceof Cccccccccc cccccccccc ? dddddddddd : eeeeeeeeee;

Relative issues or prs:

Closes #891