[v12.x backport] module: fix legacy node specifier resolution to resolve "main" field

[aduh95]

PR-URL: #38979
Fixes: #32103
Fixes: #38739
Reviewed-By: Bradley Farias [email protected]
Reviewed-By: Guy Bedford [email protected]

[richardlau]

@aduh95 Test failures
https://github.com/nodejs/node/pull/39497/checks?check_run_id=3141958951#step:5:71

=== release test-esm-specifiers ===
Path: es-module/test-esm-specifiers
--- stderr ---
internal/process/esm_loader.js:74
    internalBinding('errors').triggerUncaughtException(
                              ^

TypeError [ERR_INVALID_URL]: Invalid URL: /home/runner/work/node/node/test/fixtures/es-module-specifiers/package-type-commonjs/package.json
    at onParseError (internal/url.js:258:9)
    at new URL (internal/url.js:334:5)
    at fileURLToPath (internal/url.js:1350:12)
    at fileExists (internal/modules/esm/resolve.js:174:22)
    at resolveDirectoryEntry (internal/modules/esm/resolve.js:244:7)
    at finalizeResolution (internal/modules/esm/resolve.js:269:14)
    at moduleResolve (internal/modules/esm/resolve.js:708:10)
    at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:798:11)
    at Loader.resolve (internal/modules/esm/loader.js:100:40)
    at Loader.getModuleJob (internal/modules/esm/loader.js:246:28) {
  input: '/home/runner/work/node/node/test/fixtures/es-module-specifiers/package-type-commonjs/package.json',
  code: 'ERR_INVALID_URL'
}
Command: out/Release/node --experimental-specifier-resolution=node /home/runner/work/node/node/test/es-module/test-esm-specifiers.mjs
=== release test-esm-specifiers-legacy-flag ===
Path: es-module/test-esm-specifiers-legacy-flag
--- stderr ---
internal/process/esm_loader.js:74
    internalBinding('errors').triggerUncaughtException(
                              ^

TypeError [ERR_INVALID_URL]: Invalid URL: /home/runner/work/node/node/test/fixtures/es-module-specifiers/package-type-commonjs/package.json
    at onParseError (internal/url.js:258:9)
    at new URL (internal/url.js:334:5)
    at fileURLToPath (internal/url.js:1350:12)
    at fileExists (internal/modules/esm/resolve.js:174:22)
    at resolveDirectoryEntry (internal/modules/esm/resolve.js:244:7)
    at finalizeResolution (internal/modules/esm/resolve.js:269:14)
    at moduleResolve (internal/modules/esm/resolve.js:708:10)
    at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:798:11)
    at Loader.resolve (internal/modules/esm/loader.js:100:40)
    at Loader.getModuleJob (internal/modules/esm/loader.js:246:28) {
  input: '/home/runner/work/node/node/test/fixtures/es-module-specifiers/package-type-commonjs/package.json',
  code: 'ERR_INVALID_URL'
}
Command: out/Release/node --es-module-specifier-resolution=node /home/runner/work/node/node/test/es-module/test-esm-specifiers-legacy-flag.mjs

[ljharb]

cc @nodejs/modules

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/39244/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/39318/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/39321/

[richardlau]

Landed in f0bb3d2