Assert: Return error value from rejects() and throws()

[MatmaRex]

It permits a more natural way of asserting complex facts about the rejection value (thrown value) than the existing options of sticking assertions inside the expectedMatcher or writing your own try…catch blocks.

Fixes #1824.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: MatmaRex / name: Bartosz Dziewoński (9f3e398)

[MatmaRex]

I saw those errors locally too:

/home/runner/work/qunit/qunit/src/core/dump.js
  225:23  error  Map is not supported in iOS Safari 7.0-7.1, IE 9  compat/compat

/home/runner/work/qunit/qunit/src/core/utilities.js
  26:22  error  Array.includes() is not supported in iOS Safari 7.0-7.1, IE 9  compat/compat

They don't seem to be my fault.

[Krinkle]

Two CI issues:

1. A warning about array.includes from eslint-plugin-compat that was not previously found. This is techically correct, but not appplicable to us because we already check it beforehand. I'll fix this in the main branch with an ignore rule.
2. A warning about Map from an eslint-plugin-compat indirect update. This is incorrect and an upstream regression. I've reported this at False positives: local variables/parameters matching browser API names are flagged amilajack/eslint-plugin-compat#688, and will likewise temporarily work around it for now.