Investigate behavior of Blazor Server on mobile when switching apps

[danroth27]

Folks at ThePostage reported that they often see connection loss issues on mobile devices when switching apps. The said the problem seemed worse or iOS. We should take a look at the experience and see if there's anything we can do to improve it.

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[konradbartecki]

This is most likely due to a circuit being recycled on the server after some time.
Then when mobile browser is resuming after a long time it shows the "connection lost, retrying..." dialog for 3 seconds (default), then tries to reconnect, but this attempt is immediately rejected because server-side circuit was already disposed and results in Could not reconnect to the server. Reload the page to restore functionality message.

See #32113