Add minimal support for dynamic invokedynamic bootstrap methods

[LeaderOne369]

Summary
This PR implements a baseline execution path for generic invokedynamic bootstrap methods (BMType.DYNAMIC) on the java-17 branch. It addresses the current limitation where JPF only handles hardcoded cases like Lambdas or StringConcat, providing a foundation for broader Java 11/17 support.

Key Changes
Core Logic: Implemented INVOKEDYNAMIC.executeDynamicBootstrap(...) to handle a minimal supported subset of dynamic calls.

Regression Tests: Added InvokeDynamicBootstrapTest using ASM to generate invokedynamic call sites that standard Java compilers typically don't produce.

Technical Coverage:

Support for no-arg and String argument dynamic bootstrap call sites.

Handling of bootstrap static arguments.

Proper management of double (double-slot) stack values.

Record Fix: Restored java.lang.runtime.ObjectMethods.bootstrap to the dedicated RECORDS path to prevent interference with existing record behavior.

Scope & Limitations
To keep this initial PR reviewable, the scope is restricted to:

Static bootstrap methods.

CallSite returns (specifically ConstantCallSite).

Conversion for primitives, boxed primitives, and String on the exercised paths.

Testing
Verified via:

java11.InvokeDynamicBootstrapTest

java11.DynamicBootstrapSupport

Full local suite: ./gradlew test

Context
While JPF has special-case handling for specific bootstrap-based features, generic dynamic bootstrap execution was missing. This PR provides the necessary plumbing and testing infrastructure to begin supporting more complex Java 11+ bootstrap scenarios.

[LeaderOne369]

Hi, this PR is intended as a small first step toward the Java 11/17 bootstrap-method support direction. I kept the scope deliberately narrow so the behavior is easier to review: generic BMType.DYNAMIC, static bootstrap methods, ConstantCallSite, and regression tests for a few representative call-site shapes. I’d be very happy to refine the scope or split follow-up work further if that would make review easier.