Fix Crash when using Sha224 Callback with MAX32666#9712

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night1rider wants to merge 3 commits intowolfSSL:masterfrom

night1rider:max-32666-code-improvements

Commits on Feb 18, 2026

Improve logic behind copy and free for sha, add copy and free callback functions, fix sha224 crashing when using callbacks for MAX32666 due to unitialized struct.
night1rider
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Add setting callback and MXC init when using arm asm with callbacks
night1rider
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Remove stdio inclusion and then revert removal of null check for MXC free
night1rider
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