Line too long: string literal doesn't get split

[crhf]

Describe the bug

A long string literal doesn't get split.

To Reproduce

For example, take this code:

x = "aaaaaaaaaa bbbbbbbb cccccccccccc dddddddddddddd eeeeeeeeeeee fffffffffffffffff ggggggggggggggg hhhhhhhhhh"

And run it with these arguments:

$ black file.py

The file is left unchanged.

Expected behavior

The string gets split into something like:

x = (
    "aaa ..   . fff"
    "fff ... gggggggggg.."
)

Environment

• Black's version: 24.4.0 (compiled: yes)
• OS and Python version: WSL ubuntu 22.04, python 3.11.7

[hauntsaninja]

Duplicate of #4230 (see also #4208)