Improvements to RNG and compatibility layer

[JacobBarthelmeh]

ZD#20016

[Copilot]

Pull Request Overview

This PR implements improvements to the RNG by incorporating process ID (getpid) checks to detect forking and trigger a reseed, and it adjusts the compatibility layer and configuration accordingly.

• Added a new pid field in WC_RNG and integrated getpid-based reseeding in random.c.
• Updated tests to verify correct RNG behavior after forking.
• Modified ssl.c, configure.ac, CMakeLists.txt, and GitHub workflow files to support the new functionality.

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
wolfssl/wolfcrypt/random.h	Added a conditionally compiled pid field to WC_RNG.
wolfcrypt/src/random.c	Integrated getpid checks and a PollAndReSeed call for reseeding.
tests/api.c	Extended tests to verify reseeding behavior after forking.
src/ssl.c	Updated RNG initialization and reseed checks in FIPS-related code.
configure.ac	Added getpid to the function and declaration checks.
CMakeLists.txt	Added a check for getpid function availability.
.github/workflows/os-check.yml	Updated build flags to include new macros (with potential quoting issues).

[JacobBarthelmeh]

Retest this please Jenkins