tabs: Add spacing between the tab icon and the server tooltip.

[shubham-padia]

Fixes #1087.

Screenshots and screen captures:
Before:

After:

Platforms this PR was tested on:

• Windows
• macOS
• Linux (specify distro)

Self-review checklist

• Self-reviewed the changes for clarity and maintainability
  (variable names, code reuse, readability, etc.).

Communicate decisions, questions, and potential concerns.

• Explains differences from previous plans (e.g., issue description).
• Highlights technical choices and bugs encountered.
• Calls out remaining decisions and concerns.
• Automated tests verify logic where appropriate.

Individual commits are ready for review (see commit discipline).

• Each commit is a coherent idea.
• Commit message(s) explain reasoning and motivation for changes.

Completed manual review and testing of the following:

• Visual appearance of the changes.
• Responsiveness and internationalization.
• Strings and tooltips.
• End-to-end functionality of buttons, interactions and flows.
• Corner cases, error conditions, and easily imagined bugs.

[timabbott]

I discussed this change with @andersk and he pointed out that this is desktop app UI and should not be entirely on the user-controlled side of the Line of Death (See e.g., https://emilymstark.com/2022/12/18/death-to-the-line-of-death.html), which this PR moves it to be.

In practice what I think that means is we should have the arrow move left instead, so the arrow overlaps into the avatar box, and have the arrow have a different/shape color where it will have suitable contrast with the UI elements there.

[shubham-padia]

Got it, in this case the original issue would not be valid and we should just close that?

have the arrow have a different/shape color where it will have suitable contrast with the UI elements there.

This seems like a different issue. I'm not sure of the priority here, but my assumption is that it's not high priority.

[alya]

I think @timabbott was suggesting maybe moving this tooltip further left?

Do the other tooltips actually mentioned in the issue actually need to be pulled left to match this one?

[alya]

Not sure any of this is important.