[BC Break] Drop support for the "dynamic" pointcut type

[lisachenko]

Summary

Removes the dynamic(...) pointcut type for 4.0.0. It was the only pointcut requiring runtime matching, and it forced extra machinery through the whole pointcut layer:

• the Pointcut::KIND_DYNAMIC flag,
• the runtime-wrapping DynamicInvocationMatcherInterceptor,
• the $instanceOrScope/$arguments parameters threaded through Pointcut::matches() in every implementation.

The same behavior is achievable with a traditional execution() pointcut for the __call/__callStatic magic methods plus a method-name check inside the advice.

BC Break / Migration

Instead of:

#[Before('dynamic(public Demo\Example\DynamicMethodsDemo->save*(*))')]

use a traditional execution pointcut on the magic method and filter by the real method name (first invocation argument) inside the advice:

#[Before('execution(public Demo\Example\DynamicMethodsDemo->__call(*))')]
public function beforeMagicMethodExecution(MethodInvocation $invocation): void
{
    [$methodName, $args] = $invocation->getArguments();
    if (!str_starts_with($methodName, 'save')) {
        return;
    }
    // ...
}

(and execution(public Foo::__callStatic(*)) for the static counterpart). The DynamicMethodsAspect demo has been converted to this pattern as a live migration example, producing identical output. The BC break is documented in the CHANGELOG.

Changes

• Deleted MagicMethodDynamicPointcut, DynamicInvocationMatcherInterceptor and their tests
• Removed the dynamic lexer token and the dynamicExecutionPointcut grammar rule; regenerated the LALR parse table via the Dissect analyzer
• Removed Pointcut::KIND_DYNAMIC and the $instanceOrScope/$arguments parameters of Pointcut::matches() — clean 2-arg signature across the interface and all 11 implementations; interface docblock now describes static matching only
• GenericPointcutAdvisor::getAdvice() simplified to a plain getter
• Converted the demo aspect + updated CHANGELOG and src/Aop/AGENTS.md

Unrelated names using "dynamic" in the instance-vs-static sense (DynamicMethodInvocation, isDynamic(), the dynamic-traits demo) are intentionally untouched.

Testing

• vendor/bin/phpunit: all 2471 tests pass
• vendor/bin/phpstan analyse --memory-limit=1G: no errors
• Parser check: dynamic(...) now throws UnexpectedTokenException; all other pointcut syntaxes still parse
• Demo run end-to-end (?showcase=dynamic-interceptor with cleared cache): saveById/find intercepted, load filtered out — identical observable behavior to the old dynamic() pointcut

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