This is a follow-up of #4492

The problem

• turn "gitlens.cloudIntegrations.enabled" to false
• reload window: The app starts using Local providers
• turn "gitlens.cloudIntegrations.enabled" to true
• ⚠️ without reloading the window the app keeps using Local providers

Explanation

In IntegrationAuthenticationService.get() if we find a value in this.providers map, we just use it and never recreate. Therefore even if the gitlens.cloudIntegrations.enabled is updated we keep using the previous Authentication provider for a certain integration type.

Possible solution

Option 1

Listen to the config update and invalidate all providers.

Option 2

include value of the gitlens.cloudIntegrations.enabled config to the key, so we can keep both types of providers stored in the map and use one that matches to the current configuration.