SyntaxError after bad fix in f-string from Q000 flake8 bad-quotes-inline-string

[Hnasar]

Using ruff 0.3.5: the fix for https://docs.astral.sh/ruff/rules/bad-quotes-inline-string/ results in a syntax error

# foo.py
x = y = z = 5
s = f"Before {f'x {x}' if y else f'foo {z}'} after"

$ ruff check --target-version=py310 --select=Q foo.py  
foo.py:2:34: Q000 [*] Single quotes found but double quotes preferred

--- foo.py
+++ foo.py
@@ -1,2 +1,2 @@
 x = y = z = 5
-s = f"Before {f'x {x}' if y else f'foo {z}'} after"
+s = f"Before {f'x {x}' if y else f"foo {z}"} after"

After applying --fix

$ python3.10 foo.py 
  File "foo.py", line 2
    s = f"Before {f'x {x}' if y else f"foo {z}"} after"
                                       ^^^
SyntaxError: f-string: expecting '}'

Notes:

• The "fixed" syntax is only valid in 3.12 because it supports arbitrarily nested fstrings
• I cannot reproduce this bad fix using ruff 0.1.6

[dhruvmanila]

Oops, sorry. I think I have a permanent fix for this.