refactor(tui): Gain better aesthetic for helper text. (#9478)
### Description
Just wanting to spruce things up a bit.
- Left-aligned the text so that it bounces around less when changing
states. This is considered a generally good practice in UI design.
- Re-writing text chunks for simplicity
In the process of adjusting the text with a comma as a separator, I
realized I could refactor the logic for which text to render to be a
little easier to read. Isn't it great when the simplicity of the visual
design is reflected in the code?!
### Testing Instructions
You'll want to put the TUI into different states to see them all. Matrix
is:
- Task list open/closed
- Text selected/not selected
- Task being interacted with/ not interacted with
A sample of the spirit of the changes is below.
Before
After
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Co-authored-by: Chris Olszewski <chris.olszewski@vercel.com>
