Assert: Faster deepEqual for Map values by avoiding typeEquiv calls
Assert: Faster deepEqual for Map values by avoiding typeEquiv calls

Upto 5X more ops/sec for the maps benchmark ("primitives" shown
alongside to show baseline variability.

```
// Before
QUnit.equiv (primitives) x 348,803 ops/sec ±0.51% (86 runs sampled)
QUnit.equiv (primitives) x 353,056 ops/sec ±0.34% (87 runs sampled)
QUnit.equiv (maps) x 684 ops/sec ±1.24% (87 runs sampled)
QUnit.equiv (maps) x 691 ops/sec ±1.17% (89 runs sampled)

// After
QUnit.equiv (primitives) x 340,214 ops/sec ±0.22% (89 runs sampled)
QUnit.equiv (primitives) x 353,389 ops/sec ±0.41% (90 runs sampled)
QUnit.equiv (maps) x 3,734 ops/sec ±0.94% (89 runs sampled)
QUnit.equiv (maps) x 3,747 ops/sec ±0.42% (90 runs sampled)
```

qunitjs/qunit,qunitjs/qunit