Alexander Gherm c04f597fae Do not remove uv itself on pip sync (#1649) ...

## Summary

Added `uv` to the list of the preserved packages when building the
installer plan. In that case `uv` is not going to be removed when, for
example, using `python -m uv pip sync requirements.txt` when
requirements.txt does not contain `uv`, but `uv` is installed in that
venv.

Closes #1631 

## Test Plan

Got through the example attached to
https://github.com/astral-sh/uv/issues/1631 and did see the uv deletion
in the output
```
$ python -m uv pip sync requirements.txt
Installed 1 package in 20ms
 + ruff==0.2.2
```

2024-02-18 14:39:51 +00:00

..

src

Do not remove uv itself on pip sync (#1649)

2024-02-18 14:39:51 +00:00

Cargo.toml

Rename to uv (#1302)

2024-02-15 11:19:46 -06:00