What does this PR do

On Linux, the Coco app panicked with the following error:

memory allocation of xxx bytes failed

This line of code will https://github.com/infinilabs/pizza/blob/de36b19726d8bc4c4be21bdedcb5d24bdc6d7306/lib/engine/src/store/disk/mod.rs#L892 allocate size * 2 * 8 bytes, and size was set too high, leading to an allocation failure. Decrease size to 100_000 to fix the issue.

Not quite sure why this didn't cause any issue on macOS, possibly because the allocator implementation difference between the 2 platforms.

Rationale for this change

Standards checklist

• The PR title is descriptive
• The commit messages are semantic
• Necessary tests are added
• Updated the release notes
• Necessary documents have been added if this is a new feature
• Performance tests checked, no obvious performance degradation