Check all interfaces instead of only immediate ones for constructor enforcement in NewStaticRule

[phpstan-bot]

Summary

When a class uses new static() and an interface enforces the constructor signature, PHPStan should consider the usage safe. However, when the interface was implemented by a parent class rather than the class itself, PHPStan incorrectly reported "Unsafe usage of new static()." because it only checked immediate interfaces.

Changes

• Changed $classReflection->getImmediateInterfaces() to $classReflection->getInterfaces() in src/Rules/Classes/NewStaticRule.php (line 72) so the rule traverses the full interface hierarchy when looking for constructor-defining interfaces.

Root cause

NewStaticRule has two checks for interface-enforced constructors:

1. Whether the constructor's prototype declaring class is an interface (line 68)
2. Whether any interface of the class declares a constructor (line 72)

Check 1 fails when a concrete parent class also defines the constructor (the prototype points to the class, not the interface). Check 2 was the fallback, but it used getImmediateInterfaces() which only returns interfaces directly implemented by the current class — missing interfaces inherited from parent classes.

Analogous cases probed

• NewStaticInAbstractClassStaticMethodRule: different concern (abstract class instantiation), does not check interfaces for constructor enforcement — not affected.
• MethodPrototypeFinder::findPrototype(): uses getImmediateInterfaces() correctly because it does its own manual hierarchy walk via getParentClass().
• OverridingConstantRule::findPrototype(): same as above — manual hierarchy walk, correct usage.
• AllowedSubTypesRule: intentionally checks only direct parents for allowed subtypes — correct usage.

Test

Added tests/PHPStan/Rules/Classes/data/bug-10274.php with:

• The exact reproducer from the issue: a class hierarchy with AbstractArray (concrete constructor) -> AbstractCollection -> IntermediateCollection implements ConstructorDefiningInterface -> SpecificCollection using new static().
• A deeply-nested variant (DeeplyNestedCollection extends SpecificCollection) to verify the fix works at arbitrary depth.

Both cases expect no errors (empty expected-errors array).

Fixes phpstan/phpstan#10274