TD: Use RefreshExtension instead of ReloadWindow throughout the codebase

[zFernand0]

Can we restart extensions instead of reloading the entire window?
I'm wondering if it'd be possible to minimize full window-reloads going forward 😅

Originally posted by @zFernand0 in #3297 (comment)

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See this for details:

• Change default credentials manager check and not-found dialog #3297 (comment)

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