chore: rule of 3 for strdup guard #3905
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Skylion007
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Description
I noticed our strdup_guard wasn't properly following the rule of 5 and some of the implicit copy constructors / assignment operators could in theory cause a double free. This PR explicitly deletes the copy ctors to guard against accidents in future refactoring work.
Suggested changelog entry:
* Avoid potential implicit copy/assignment constructors causing double free in ``strdup_gaurd``.