Add dangling comment handling for lambda expressions (#7493)

## Summary

This PR adds dangling comment handling for `lambda` expressions. In
short, comments around the `lambda` and the `:` are all considered
dangling. Comments that come between the `lambda` and the `:` may be
moved after the colon for simplicity (this is an odd position for a
comment anyway), unless they also precede the lambda parameters, in
which case they're formatted before the parameters.

Closes https://github.com/astral-sh/ruff/issues/7470.

## Test Plan

`cargo test`

No change in similarity.

Before:

| project | similarity index | total files | changed files |

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1632 |
| django | 0.99982 | 2760 | 37 |
| transformers | 0.99957 | 2587 | 398 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99929 | 648 | 16 |
| zulip | 0.99962 | 1437 | 22 |

After:

| project | similarity index | total files | changed files |

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1632 |
| django | 0.99982 | 2760 | 37 |
| transformers | 0.99957 | 2587 | 398 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99929 | 648 | 16 |
| zulip | 0.99962 | 1437 | 22 |

crates/ruff_python_formatter/resources/test/fixtures/ruff/expression/lambda.py

@@ -152,4 +152,54 @@ lambda *x\
         x: x
 )
 
+lambda: ( # comment
+    x)
 
+(
+    lambda:  # comment
+    x
+)
+
+(
+    lambda:
+    # comment
+    x
+)
+
+(
+    lambda  # comment
+    :
+    x
+)
+
+(
+    lambda
+    # comment
+    :
+    x
+)
+
+(
+    lambda:  # comment
+    (  # comment
+        x
+    )
+)
+
+(
+    lambda  # 1
+    # 2
+    x  # 3
+    # 4
+    :  # 5
+    # 6
+    x
+)
+
+(
+    lambda
+    x,
+    # comment
+    y:
+    z
+)