[ruff] Add RUF074 incorrect-decorator-order

[anishgirianish]

Summary

Implements detection of incorrect decorator ordering on functions and methods (RUF071).

Decorators are applied bottom-up, so certain stdlib decorator combinations cause runtime errors or silent wrong behavior when placed in the wrong order. For example, @abstractmethod above @property results in AttributeError: __isabstractmethod__.

Detects known-bad pairs involving:

• abc.abstractmethod (+ deprecated abstractclassmethod, abstractstaticmethod, abstractproperty)
• builtins.property, builtins.classmethod, builtins.staticmethod
• contextlib.contextmanager, contextlib.asynccontextmanager
• functools.cache, functools.cached_property, functools.lru_cache

Test Plan

cargo nextest run -p ruff_linter -E 'test(preview_rules::rule_incorrectdecoratororder)'

Fixture covers:

• All known-bad pairs (core + functools)
• Qualified imports (abc.abstractmethod, functools.lru_cache)
• Deprecated abc forms (abstractproperty, abstractclassmethod, abstractstaticmethod)
• Decorator call forms (@lru_cache(), @lru_cache(maxsize=128))
• Interleaved unknown decorators
• Multiple violations on the same function
• Correct orderings, single decorators, unrelated decorators (no false positives)

Closes #6697

[astral-sh-bot]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.

[ntBre]

Could you check the ecosystem results? cached_property and abstractmethod seem to be working okay in that order, so I don't think we should emit a diagnostic.

[anishgirianish]

Could you check the ecosystem results? cached_property and abstractmethod seem to be working okay in that order, so I don't think we should emit a diagnostic.

sure checking now thanks

[ntBre]

Thanks, this looks reasonable to me overall (although I still need to go through all the test cases). I mainly had a question about the multi-decorator case and a nit about Display.

[anishgirianish]

Hi @ntBre @amyreese, I've addressed the review comments. Would love another look whenever you have time. Thanks so much!

[ntBre]

Thanks! Just a couple more questions about @property.setter and possible references for the chosen pairs.

[anishgirianish]

@ntBre @amyreese Addressed both comments and pushed the changes. Ready for another look whenever you get a chance!