Handle comments on open parentheses in with statements (#6515)

## Summary

This PR adds handling for comments on open parentheses in parenthesized
context managers. For example, given:

```python
with (  # comment
    CtxManager1() as example1,
    CtxManager2() as example2,
    CtxManager3() as example3,
):
    ...
```

We want to preserve that formatting. (Black does the same.) On `main`,
we format as:

```python
with (
    # comment
    CtxManager1() as example1,
    CtxManager2() as example2,
    CtxManager3() as example3,
):
    ...
```

It's very similar to how `StmtImportFrom` is handled.

Note that this case _isn't_ covered by the "parenthesized comment"
proposal, since this is a common on the statement that would typically
be attached to the first `WithItem`, and the `WithItem` _itself_ can
have parenthesized comments, like:

```python
with (  # comment
    (
        CtxManager1()  # comment
    ) as example1,
    CtxManager2() as example2,
    CtxManager3() as example3,
):
    ...
```

## Test Plan

`cargo test`

Confirmed no change in similarity score.

crates/ruff_python_formatter/tests/snapshots/format@parentheses__opening_parentheses_comment_value.py.snap

@@ -170,8 +170,7 @@ async def h():
     )
 
 
-with (
-    # d 1
+with (  # d 1
     x
 ):
     pass

crates/ruff_python_formatter/tests/snapshots/format@statement__import_from.py.snap

@@ -88,7 +88,9 @@ from a import (  # comment
     bar,
 )
 
-from a import bar  # comment
+from a import (  # comment
+    bar
+)
 
 from a import (
     bar,

crates/ruff_python_formatter/tests/snapshots/format@statement__with.py.snap

@@ -122,6 +122,24 @@ with [
     dddddddddddddddddddddddddddddddd,
 ] as example1, aaaaaaaaaaaaaaaaaaaaaaaaaa * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb * cccccccccccccccccccccccccccc + ddddddddddddddddd as example2, CtxManager222222222222222() as example2:
     ...
+
+# Comments on open parentheses
+with (  # comment
+    CtxManager1() as example1,
+    CtxManager2() as example2,
+    CtxManager3() as example3,
+):
+    ...
+
+
+with (  # outer comment
+    (  # inner comment
+        CtxManager1()
+    ) as example1,
+    CtxManager2() as example2,
+    CtxManager3() as example3,
+):
+    ...
 ```
 
 ## Output
@@ -250,6 +268,25 @@ with [
     dddddddddddddddddddddddddddddddd,
 ] as example1, aaaaaaaaaaaaaaaaaaaaaaaaaa * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb * cccccccccccccccccccccccccccc + ddddddddddddddddd as example2, CtxManager222222222222222() as example2:
     ...
+
+# Comments on open parentheses
+with (  # comment
+    CtxManager1() as example1,
+    CtxManager2() as example2,
+    CtxManager3() as example3,
+):
+    ...
+
+
+with (  # outer comment
+    (
+        # inner comment
+        CtxManager1()
+    ) as example1,
+    CtxManager2() as example2,
+    CtxManager3() as example3,
+):
+    ...
 ```