Support for ignoring lazy (not weak) async imports

[jtbandes]

The note on allowAsyncCycles gives an example of using it for weak imports:

      // allow import cycles that include an asyncronous import,
      // e.g. via import(/* webpackMode: "weak" */ './file.js')
      allowAsyncCycles: false,

But it would be nice if this also worked for regular async imports that aren't marked with webpackMode: "weak". It sounds like the default mode for async imports is lazy. https://webpack.js.org/api/module-methods/#magic-comments

[jtbandes]

After some further testing I've noticed that this reproduces when using TypeScript with the compiler flag "module": "commonjs".

[ferm10n]

I'd love to fix this, but I haven't any clue how to tell from a Dependency / ModuleDependency that it's imported via import().

Here's what circular-dependency-plugin looks at:

circular-dependency-plugin/index.js

Line 104 in 21777bf

if (this.options.allowAsyncCycles && dependency.weak) { continue }

And the source from webpack:
https://github.com/webpack/webpack/blob/1f13ff9fe587e094df59d660b4611b1bd19aed4c/lib/Dependency.js#L100

It's really frustrating how hard it is to find a reference for webpack APIs like this.