Remove overlap of sender name and first message tap targets.

[pixlwave]

The XIBs had the tap target extending 6pt below the name. This resulted in a frequent occurrence where you would go to tap the top message but end up tapping the name instead. This PR sets the bottom constant to 0pth to align with the name label. In my testing it was no harder to tap the name, and significantly easier to tap the top message.

Before

After

(Width differences seen above are due to different size devices)

The height on bubbles has been reduced to 3pt so it exactly matches to the top of the bubble.

Bubbles

Fixes #4324

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[aringenbach]

Good catch! Taping first line Mention Pills was pretty hard indeed.

[github-actions]

📱 Scan the QR code below to install the build for this PR.
🔒 This build is for internal testing purpose. Only devices listed in the ad-hoc provisioning profile can install Element Alpha.

If you can't scan the QR code you can install the build via this link: https://i.diawi.com/tAwaLd