Catch panics in formatter (#7377)

## Summary

This PR ensures that we catch and render panics in the formatter
identically to other kinds of errors. It also improves the consistency
in error rendering throughout and makes a few stylistic changes to the
messages.

Closes https://github.com/astral-sh/ruff/issues/7247.

## Test Plan

I created a file `foo.py` with a syntax error, and a file `bar.py` with
an intentional panic.

<img width="1624" alt="Screen Shot 2023-09-13 at 10 25 22 PM"
src="605c2839-ad02-4376-a2e9-d5a593ab660f">

<img width="1624" alt="Screen Shot 2023-09-13 at 10 25 24 PM"
src="b1381909-157c-48cb-9630-d0bbfcb1b640">

crates/ruff_python_formatter/src/lib.rs

@@ -120,7 +120,7 @@ impl From<ParseError> for FormatModuleError {
     }
 }
 
-#[tracing::instrument(level=Level::TRACE, skip_all, err)]
+#[tracing::instrument(level=Level::TRACE, skip_all)]
 pub fn format_module(
     contents: &str,
     options: PyFormatOptions,