Password manager touchpoint copy updates

[amddg44]

Task/Issue URL: https://app.asana.com/0/72649045549333/1207044475588308/f
Tech Design URL:
CC:

Description:
Copy updates + styling change to the Save Password prompt to include the DuckDuckGo logo

Steps to test this PR:

1. Go to fill.dev and save a password. Confirm the prompt title now has the Dax logo and updated copy "Save Password to DuckDuckGo?"
2. Trigger an update password from fill.dev and confirm the Update prompt title also has the Dax logo and update copy "Update Password?"
3. Confirm the system Lock Dialog copy is now "DuckDuckGo is trying to unlock your passwords and autofill info for you."
4. Confirm the import options from the Password Management panel are "Import passwords..." / "Export passwords..."
5. Confirm the toolbar shortcut copy is updated to "Hide Passwords Shortcut" / "Show Passwords Shortcut"
6. Go to Settings and confirm the copy is:

• "Import passwords..." / "Export passwords..."
• "Open Passwords..." / "Open Identities..." / "Open Payment Methods..."
• "Lock access to passwords and autofill info after computer is idle for" / "If not locked, anyone with access to your device will be able to use and modify your autofill info. For security purposes, payment method form fill always requires authentication."

7. Connect to Bitwarden and regression test the Save / Update password prompts, confirming they have not been impacted

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Internal references:

Pull Request Review Checklist
Software Engineering Expectations
Technical Design Template
Pull Request Documentation

[github-actions]

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[aataraxiaa]

Tested and verified. Logo in save dialog looks awesome! 🚀