Make determination of PYBIND11_COMPILER_TYPE "macos" or "glibc" more general.

The main motivation is to resolve these "Manylinux on 🐍 3.13t • GIL" and "Pyodide wheel" failures: ``` /__w/pybind11/pybind11/include/pybind11/conduit/pybind11_platform_abi_id.h:35:10: error: #error "Unknown PYBIND11_COMPILER_TYPE: PLEASE REVISE THIS CODE." 35 | # error "Unknown PYBIND11_COMPILER_TYPE: PLEASE REVISE THIS CODE." | ^~~~~ ``` (All other CI jobs succeeded.) Further thought: Essentially, under Linux and macOS the `PYBIND11_COMPILER_TYPE` is only for informational purposes. ABI compatibility is determined by the libstdc++ or libc++ ABI version.

Author: rwgk

include/pybind11/conduit/pybind11_platform_abi_id.h

@@ -23,14 +23,10 @@
 # define PYBIND11_COMPILER_TYPE "gcc_cygwin"
 # elif defined(_MSC_VER)
 # define PYBIND11_COMPILER_TYPE "msvc"
-# elif defined(__GLIBC__) \
- && (defined(__INTEL_COMPILER) || defined(__clang__) || defined(__GNUC__))
-// // Compatibility is determined based on libstdc++ or libc++ ABI version (below).
-# define PYBIND11_COMPILER_TYPE "glibc"
-# elif defined(__APPLE__) \
- && (defined(__INTEL_COMPILER) || defined(__clang__) || defined(__GNUC__))
-// // Compatibility is (usually) determined based on libc++ ABI version (below).
+# elif defined(__APPLE__)
 # define PYBIND11_COMPILER_TYPE "macos"
+# elif defined(__GLIBC__) || defined(_GLIBCXX_USE_CXX11_ABI)
+# define PYBIND11_COMPILER_TYPE "glibc"
 # else
 # error "Unknown PYBIND11_COMPILER_TYPE: PLEASE REVISE THIS CODE."
 # endif