Resolve skipped type tests

[MelSumner]

Some tests in the type/tests file are skipped, so I'm filing an issue so we can keep track of them and fix them.

[NullVoxPopuli]

They aren't skipped (in the qunit sense), because they're type tests, and the types directory isn't included in the test app.

Post v2-conversion, i want to move to all that to a normal expectType test, like what's done in ember-resources and ember-source

Examples

• https://github.com/NullVoxPopuli/ember-resources/blob/main/ember-resources/src/-type-tests/link.test.ts
• https://github.com/NullVoxPopuli/ember-resources/blob/main/ember-resources/src/core/-type-tests/args-helpers.test.ts
• https://github.com/emberjs/ember.js/blob/main/type-tests/%40ember/component-test/set-component-template.ts