PRE-2309: best practice cleanup

[penDerGraft]

This PR cleans up some minor details throughout the codebase:

• Uses calldata instead of memory to improve gas efficiency
• Adds a security contact
• Makes imports explicit for clarity
• Removes redundant fields from events

[openzeppelin-code]

PRE-2309: best practice cleanup

Generated at commit: fa3041342dd6888232407db4d696327973cbc2ed

🚨 Report Summary

	Severity Level	Results
Contracts	Critical High Medium Low Note Total	1 0 0 3 21 25
Dependencies	Critical High Medium Low Note Total	0 0 0 0 0 0

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For more details view the full report in OpenZeppelin Code Inspector