fix(js_formatter): correctly format nested union type

[ah-yu]

Summary

Fix the following case

// Input
type Foo = | ( /* 1 */ | A
    // B
    | B )

// Before
type Foo = /* 1 */
  | A
  // B
  | B;
// The output will be reformatted to 
type Foo =
  /* 1 */
  | A
  // B
  | B;

// After
type Foo =
  /* 1 */
  | A
  // B
  | B;

Test Plan

Add a new test and enable the prettier test that was disabled before due to the reformatting issue.

[Conaclos]

Nice!

[codspeed-hq]

CodSpeed Performance Report

Merging #2628 will not alter performance

_{Comparing ah-yu:single_type (96bb65e) with main (ce4979d)}

Summary

✅ 90 untouched benchmarks