Get things working on Node 22

- Specify the tests on the command line (Node 22 needs this)

- Test Node 22 in GitHub actions build matrix

- Remove option `--experimental-json-modules`
  I don't think we are importing json files anywhere anymore?
  And I think it's been unflagged since Node 16

- Add option `--no-experimental-global-navigator`
  Our tests mock `Navigator`, and this will be an issue eventually
  Node 22 introduces it as an experimental global - let's not deal with it now

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [18, 20]
+        node-version: ['18', '20', '22']
 
     steps:
     - uses: actions/checkout@v4

.npmrc

@@ -1 +1 @@
-node-options="--no-warnings --experimental-json-modules"
+node-options="--no-warnings --no-experimental-global-navigator"

package.json

@@ -46,7 +46,7 @@
     "test": "npm-run-all -s lint build test:unit test:browser",
     "test:benchmark": "npm run test:unzip-benchmark-data && npx playwright test --workers=1 --config=test/benchmark/playwright.config.mjs && npm run test:cleanup-benchmark-data",
     "test:browser": "karma start karma.conf.cjs",
-    "test:unit": "c8 node --test-reporter spec --test test/unit",
+    "test:unit": "c8 node --test-reporter spec --test test/unit/**/*.test.js",
     "test:unzip-benchmark-data": "tar -xvf test/benchmark/tokyo_canned_data.zip -C test/benchmark",
     "test:cleanup-benchmark-data": "rm test/benchmark/tokyo_*_canned_osm_data.js",
     "translations": "node scripts/update_translations.js"