docs(output): document the futureDefaults module output default - #8396

Documents the output.module default that webpack/webpack#22088 ships in webpack 5.111.0.

configuration/output.mdx — output.module

• The default line now also names the module / modern-module library types, which turn the option on without any experiment (fix(config): default output.module to true for module library types webpack#22071, previously undocumented).
• A new paragraph, badged 5.111.0+, covers the experiments.futureDefaults default: module output wherever the target can read an ECMAScript module, and the three things that keep script output — a target stating it cannot (a browserslist query resolving to engines without module support, or a version below it), a library type read out of a script wherever it is declared, and an explicit output.module. It also spells out that a target saying nothing about modules (web, webworker, a plain node) counts as able to read one.

configuration/experiments.mdx — experiments.futureDefaults

One paragraph naming module output as one of those defaults, with the visible consequence ([name].mjs, output.chunkFormat: 'module', output.chunkLoading: 'import') and a pointer to output.module for the full rule.

Every statement was checked against the merged implementation by resolving real configurations through applyWebpackOptionsDefaults, rather than read off the diff.

lint:prettier, lint:markdown and lint:js pass on both files locally; lint:prose (vale) I could not run here, as it is installed by a GitHub Action rather than npm.

Generated by Claude Code