Bond stub and mock rules to phpunit/phpunit >=11.0

[TomasVotruba]

The stub and mock rules were only reachable through PHPUnitSetList::PHPUNIT_MOCK_TO_STUB, with nothing tying them to a PHPUnit version. They now declare the constraint themselves and are registered in the composer-based set, so withComposerBased(phpunit: true) picks them up on any project with PHPUnit 11 or newer.

-final class BareCreateMockAssignToDirectUseRector extends AbstractRector
+final class BareCreateMockAssignToDirectUseRector extends AbstractRector implements ComposerPackageConstraintInterface
 {
+    public function provideComposerPackageConstraint(): ComposerPackageConstraint
+    {
+        return new ComposerPackageConstraint('phpunit/phpunit', '>=11.0');
+    }

Rules bound to >=11.0:

• CreateStubOverCreateMockArgRector
• CreateStubInCoalesceArgRector
• ExpressionCreateMockToCreateStubRector
• PropertyCreateMockToCreateStubRector
• MockObjectVarToStubRector
• AddIntersectionVarToMockObjectPropertyRector
• AddStubIntersectionVarToStubPropertyRector
• BareCreateMockAssignToDirectUseRector

MockObjectArgCreateStubToCreateMockRector already declared >=11.0 and was already in the set.

And registered in composer-based.php:

// stubs over mocks, where no expectations are set, since PHPUnit 11.0
CreateStubOverCreateMockArgRector::class,
CreateStubInCoalesceArgRector::class,
ExpressionCreateMockToCreateStubRector::class,
PropertyCreateMockToCreateStubRector::class,
MockObjectVarToStubRector::class,
AddIntersectionVarToMockObjectPropertyRector::class,
AddStubIntersectionVarToStubPropertyRector::class,
BareCreateMockAssignToDirectUseRector::class,

// mocks back over stubs, where a mock object is required
MockObjectArgCreateStubToCreateMockRector::class,

phpunit-mock-to-stub.php is left as is - the rules now self-gate wherever they are registered, so a PHPUnit 10 project including that set no longer gets stub conversions it cannot use.

Based on #749, which restores rector/rector-src to dev-main; without it composer install fails on main.