Lisk desktop tests fail when lisk-client is updated to v6

[ManuGowda]

Expected behavior

Configure Lisk desktop tests environment to handle buffer for both browser and nodejs

Actual behavior

• When we update lisk-client dependency to its latest version the tests starts to fail
• The root cause of failing tests are due to the changes in the way lisk-client is being shipped from version >= v6
  • The global buffer is an instance of browser buffer f0c25ef
  • Since the jest setup is configured to work with nodejs buffer, if we update lisk-client to its latest version the lisk-client functions starts to fail

Steps to reproduce

• Checkout development branch
• Update lisk-client to latest version v6
• Run npm install
• Run npm run test

Which version(s) does this affect? (Environment, OS, etc...)

Lisk Desktop v3

[shuse2]

The main reason why browser became default is we use the browser version in faucet and dashboard plugins and they are working.
It doesn't work with node version because dashboard/faucet do not have bundler setting
exports field is currently not working well in TypeScript.

If we change the default back

• Make sure faucet/dashboard plugin UI works as it is. (maybe we just need bundler to resolve)