feat: refresh oauth2 tokens on authentication details change

[patrickhuy]

When the authentication details used to retrieve an oauth2 token change we need to retrieve a new token this change makes it so that insomnia automatically disregards existing oauth2 tokens that were created with different authentication details

This should address the issue discussed in https://github.com/Kong/insomnia/issues/260 and https://github.com/Kong/insomnia/discussions/3564 respectively as in that scenario the authentication details change when switching environments such a token should be retrieved.

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