Bug report

Bug description:

[The doc](https://docs.python.org/3/library/string.html#format-specification-mini-language) says below:

Changed in version 3.10: Preceding the width field by '0' no longer affects the default alignment for strings.

But, preceding the width field by '0' affects the default alignment for strings using str.format() says below:
on Python 3.12.7 as shown below:

v = "Hello" # ↓ print('{0:<08}'.format(v)) # Hello000 # ↓ print('{0:>08}'.format(v)) # 000Hello

CPython versions tested on:

3.12

Operating systems tested on:

Windows