fix: keyspace causes heap-buffer-overflow

Walkthrough

The changes primarily address a heap-buffer-overflow issue in the InfoCmd::InfoKeyspace function within the src/pika_admin.cc file. This is achieved by adjusting conditional statements, modifying comparisons for key_infos size, and updating relevant constants across various files. These updates ensure that memory allocation is correctly handled, thereby preventing process crashes.

Changes

File(s)	Change Summary
`src/pika_admin.cc`	Adjusted async statistics messages conditions, modified key_infos size comparison, and slightly adjusted output messages.
`.../base_value_format.h`	Added new constant `DataTypeNum` initialized with the integer value of `kNones`.
`src/storage/src/redis.cc`	Updated the `SetCompactRangeOptions` and `ScanKeyNum` functions to use `DataTypeNum` for `key_infos` resizing.
`src/storage/src/storage.cc`	Changed the `Storage` class's `GetKeyNum` method to use `DataTypeNum` for resizing `key_infos`.

Assessment against linked issues

Objective	Addressed	Explanation
Fix heap-buffer-overflow error when executing `dbsize` on macOS environments (#2747).	✅
Adjust `InfoCmd::InfoKeyspace` to ensure correct memory allocation and avoid crashes (#2747).	✅

Poem

In code's deep dance and memory's flow, A buffer overflow had room to grow. But with careful tweaks and constant clear, Stability reigns, no need to fear. Cheers to lines both fine and neat, The Pika codebase feels complete! 🐇✨

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OpenAtomFoundation / pika