#2396 Fix: choose correct keys for message encryption

[ioanmo226]

This PR fixed choosing correct key for message encryption

close #2396 // if this PR closes an issue

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Tests (delete all except exactly one):

• Tests added or updated

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To be filled by reviewers

I have reviewed that this PR... (tick whichever items you personally focused on during this review):

• addresses the issue it closes (if any)
• code is readable and understandable
• is accompanied with tests, or tests are not needed
• is free of vulnerabilities
• is documented clearly and usefully, or doesn't need documentation

[tomholub]

the title should say "correct keys" not "correct key". hopefully the implementation reflects that, didn't check

[sosnovsky]

I also think it'll be useful to have ability to send unencrypted message to recipient without valid keys, but it'll be for another issue.

For example, user tries to send message to recipient with expired key (or sign-only key) - currently we just show modal saying recipient has expired key, please contact him. But to message this recipient user will need to use another email client.

Here we can add button Send unencrypted message to error modal, tapping on it will open another compose screen with predefined text:

Hi,

I tried to compose encrypted message to you, but your public key is expired|revoked|sign-only.
Can you please share your valid public key.

Thanks

[sosnovsky]

Works great now 👍 Let's just rename some variables to be consistent

[sosnovsky]

👍