pyupgrade (`UP`) fixes do not include `dict`/`set` literal fixes

I noticed that the pyupgrade fixes result in different output to pyupgrade itself. Namely, it doesn't apply replace the use of dict() and set() with the equivalent literals.

x = dict(a=1)
y = dict((a, b) for a, b in ['a', '1'])
a = set(['a', 'b'])
b = set([x for x in ['a', 'b']])

pyupgrade identifies and replaces these:

❯ pyupgrade --py38-plus test.py 
Rewriting test.py
❯ cat test.py 
x = dict(a=1)
y = {a: b for a, b in ['a', '1']}
a = {'a', 'b'}
b = {x for x in ['a', 'b']}

ruff does not (at least not using just the U fix class):

❯ ruff check --select U --fix --unsafe-fixes test.py 
All checks passed!

However, while I couldn't find anything confirming this (it's not mentioned in https://github.com/astral-sh/ruff/issues/827 and a search through other issues didn't highlight anything), it seems enabling another class of rules, the flake8-comprehensions (C4), resolves this.

❯ ruff check --select U,C4 --fix --unsafe-fixes test.py 
Found 7 errors (7 fixed, 0 remaining).
❯ cat test.py 
x = {'a': 1}
y = dict(['a', '1'])
a = {'a', 'b'}
b = {'a', 'b'}

I don't know if the documentation tooling allows this (https://docs.astral.sh/ruff/rules/ appears to be auto-generated) but it could be helpful to provide a pointer or note to this effect for someone looking to replace pyupgrade wholesale? Alternatively, maybe this issue is enough of a pointer and it can simply be closed straight off :smile:

astral-sh / ruff

pyupgrade (`UP`) fixes do not include `dict`/`set` literal fixes #12592