eg: RECORD=1 to recordVideo & recordHar; fixed: recordVideo can't be false

Strangely `recordHar` can be false instead of undefined, but made it symmetric.

config.js

@@ -6,6 +6,7 @@ dotenv.config({ path: 'data/config.env' }); // loads env vars from file - will n
 // Options - also see table in README.md
 export const cfg = {
   debug: process.env.PWDEBUG == '1', // runs non-headless and opens https://playwright.dev/docs/inspector
+  record: process.env.RECORD == '1', // `recordHar` (network) + `recordVideo`
   dryrun: process.env.DRYRUN == '1', // don't claim anything
   show: process.env.SHOW == '1', // run non-headless
   get headless() { return !this.debug && !this.show },