Change RelayTests to recognise the tristate multihop UI

[acb-mv]

This changes the Text elements in the multihop UI to Button elements, and adapts the UI tests to use those.

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This change is 

[linear]

IOS-1552 Fix UI tests for tristate multihop setting

[github-actions]

🚨 End to end tests failed. Please check the failed workflow run.

[rablador]

@rablador reviewed 3 files and all commit messages, and made 1 comment.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on acb-mv).

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ios/MullvadVPNUITests/Pages/MultihopPage.swift line 44 at r1 (raw file):

        return self
    }
    

Nit: Extra spaces

[rablador]

@rablador reviewed 2 files and all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on acb-mv).

[mojganii]

@mojganii made 1 comment.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on acb-mv).

[rablador]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on acb-mv).