fix: [CHK-2640] Back loop between select method and insert email

[petretiandrea]

The loop between select method page and insert email page when pressing back button is caused by pushing another email page on history stack. The email page use navigate(-1) on back press and the previously page is select method when coming from it, so this generate a loop. To solve it, just pop from history stack the select method page to go back to email page.

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

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• My change requires a change to the documentation.
• I have updated the documentation accordingly.