Automated fix by @leftibot.

What changed

Fix #514: Avoid exception-based control flow for arithmetic type dispatch
During overloaded function dispatch, when a function's parameter mismatches
are all arithmetic-to-arithmetic (e.g., int where float is expected), the
dispatcher now performs inline Boxed_Number conversion before calling the
function. Previously, the function was called with mismatched types, threw
bad_boxed_cast, and fell through to dispatch_with_conversions — a slow path
on platforms like MSVC where exceptions are expensive under the debugger.
Co-Authored-By: Claude Opus 4.6 (1M context) noreply@anthropic.com

Files

 include/chaiscript/dispatchkit/proxy_functions.hpp | 73 ++++++++++++++--------
 unittests/compiled_tests.cpp                       | 47 ++++++++++++++
 2 files changed, 94 insertions(+), 26 deletions(-)

Closes #514

Triggered by @lefticus.