Tests: Add or update UI tests for more real world scenarios

The existing UI tests have a couple downsides:

1. They use numbers instead of strings due to autocorrect/autocomplete issues. We should disable that behavior in the test environment so we can use real strings.
2. The tests don't have a mix of formatted and unformatted text. Ideally they would be more like the Android tests, which enter unformatted text first and then enter text with the selected formatting.

We should update our existing UI tests (or add to them, but I don't see a reason to keep the current ones as-is) to address these two issues.

Inizia individuando i test UI esistenti e confronta i relativi scenari con i test Android menzionati nell’issue. Verifica come l’ambiente di test gestisce la correzione automatica o il completamento automatico, quindi aggiorna o estendi la copertura UI per il testo non formattato seguito da testo formattato e verifica sia l’input di stringhe reali sia il comportamento della formattazione.