Multiline Text Input with `Justify::Right` or `Justify::End` with trailing whitespace at the end renders oddly

## Bevy version and features

Main — Found while testing out #24584

## What you did

Input multiline text with trailing whitespace at the end. For example:
```
hey
how are you
```
There are extra spaces after the second line e.g. `how are you `

## What went wrong

The first line has the spacing added to it as well while rendering. They aren’t actually added, but it is rendered with extra white space appended. I would add a screenshot but Github is being annoying again.

I would expect that the spacing would be rendered next to the line for `how are you `, without any extra white line space added to the first `hey` line