Avoid using markAsRead where we don't need it

[andybalaam]

Avoid using markAsRead where we don't need it, which allows us to re-enable some disabled tests.

Part of element-hq/element-web#25449

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This change is marked as an internal change (Task), so will not be included in the changelog.

[andybalaam]

Even when I use Chromium to run locally, the test "Editing a message makes a room unread" passes for me here, and fails on CI because it can't find the "1" in the notification - instead it finds an empty string:

2023-09-05T11:01:27.4619919Z �[32m              cy:log ✱ �[39m Assert room unread Room Beta 1
2023-09-05T11:01:27.4620110Z �[32m          cy:command ✔ �[39m within	
2023-09-05T11:01:27.4620386Z �[31m�[1m          cy:command ✘ �[22m�[39m get	.mx_NotificationBadge_count
2023-09-05T11:01:27.4620978Z �[31m�[1m          cy:command ✘ �[22m�[39m assert	expected **.mx_NotificationBadge_count** to have text **'1'**, but the text was **''**

I am at a loss as to what causes this difference.

[weeman1337]

Go 👍