GPII-2843: Fix the broken browser channel example

[cindyli]

Use the GPII config that includes the local flow manager to support the browser channel example.

[gpii-bot]

CI job passed: https://ci.gpii.net/job/universal-tests/685/

[amb26]

Actually it will be more helpful to direct the user to one of our mock configurations like https://github.com/GPII/universal/blob/master/gpii/configs/mocks/gpii.config.development.all.local.mock.windows.json5 which will allow them to see the results of a wider range of preference sets

[cindyli]

I've made the change. Ready for another look, @amb26.

[gpii-bot]

CI job passed: https://ci.gpii.net/job/universal-tests/686/

[cindyli]

@amb26, now the initial user settings are set and returned at connectionSucceeded. The changes include:

1. This example cannot use mock windows config file because the mock setImpl() does not set payload to the proper model path at model.settings;
2. Using gpii.config.development.all.local config reads solution registry from darwin.json, which requires to add net.gpii.uioPlus solution into this JSON file.

This pull request is ready to be reviewed.

[gpii-bot]

CI job failed: https://ci.gpii.net/job/universal-tests/727/

[cindyli]

ok to test

[gpii-bot]

CI job failed: https://ci.gpii.net/job/universal-tests/728/

[gpii-bot]

CI job passed: https://ci.gpii.net/job/universal-tests/729/

[gpii-bot]

CI job passed: https://ci.gpii.net/job/universal-tests/732/

[gtirloni]

ok to test

[gpii-bot]

CI job failed: https://ci.gpii.net/job/universal-tests/884/

[gpii-bot]

CI job passed: https://ci.gpii.net/job/universal-tests/886/