Add buildkite analytics test collection to react and react-native e2e tests

[Cawllec]

There's some overlap with maze-runner options between config files and options in the pipeline, once the maze-runner mechanism for reading the config files is fixed we should be able to remove the pipeline options.

[github-actions]

@bugsnag/browser bundle size diff

	Minified	Minfied + Gzipped
Before	45.76 kB	13.77 kB
After	45.76 kB	13.77 kB
±	No change	No change

code coverage diff

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Generated by 🚫 dangerJS against 8b3b00b

[twometresteve]

One small tweak to make before merging, but happy to approve now.