Format ExprIfExp (ternary operator) (#5597)

## Summary

Format `ExprIfExp`, also known as the ternary operator or inline `if`.
It can look like
```python
a1 = 1 if True else 2
```
but also
```python
b1 = (
    # We return "a" ...
    "a" # that's our True value
    # ... if this condition matches ...
    if True # that's our test
    # ... otherwise we return "b§
    else "b" # that's our False value
)
```

This also fixes a visitor order bug.

The jaccard index on django goes from 0.911 to 0.915.

## Test Plan

I added fixtures without and with comments in strange places.

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

@@ -0,0 +1,33 @@
+a1 = 1 if True else 2
+
+a2 = "this is a very long text that will make the group break to check that parentheses are added" if True else 2
+
+# These comment should be kept in place
+b1 = (
+    # We return "a" ...
+    "a" # that's our True value
+    # ... if this condition matches ...
+    if True # that's our test
+    # ... otherwise we return "b"
+    else "b" # that's our False value
+)
+
+# These only need to be stable, bonus is we also keep the order
+c1 = (
+    "a" # 1
+    if # 2
+    True # 3
+    else # 4
+    "b" # 5
+)
+c2 = (
+    "a" # 1
+    # 2
+    if # 3
+    # 4
+    True # 5
+    # 6
+    else # 7
+    # 8
+    "b" # 9
+)