rollbar 3.0.0-beta.2 on Node.js NPM

What's Changed

Set default environment to 'unknown' by @waltjones in #1294
[Meta-branch] Karma -> WTR migration and Grunt removal by @matux in #1303
Remove more unused dev deps after grunt/karma removal by @matux in #1304
Export telemetry from ReplayMap by @waltjones in #1305
Rename ReplayMap to ReplayManager by @matux in #1306
Convert Instrumenter to a class by @waltjones in #1307
Convert Telemeter to class by @waltjones in #1308
Telemetry: enable dom events by @waltjones in #1309
Enable request headers and add replay-id header by @waltjones in #1310
Turn Queue into a class by @matux in #1311
Enable attributes on the session, and send as span attributes on replay by @waltjones in #1313
Remove console log leftover from tracing exporter by @matux in #1316
Updates claude main project directives with latest changes by @matux in #1312
Add connectivity event by @waltjones in #1317
Release 3.0.0-beta.2 by @matux in #1318

Full Changelog: v3.0.0-beta.1...v3.0.0-beta.2