Specify that subgroup check is skipped for add in SIMD-0302

[samkim-crypto]

Specify the fact that the subgroup check should be skipped for the addition syscall for alt_bn128.

cc: @0x0ece, @zz-sol, @Rexicon226

[simd-bot]

Hello samkim-crypto! Welcome to the SIMD process. By opening this PR you are affirming that your SIMD has been thoroughly discussed and vetted in the SIMD discussion section. The SIMD PR section should only be used to submit a final technical specification for review. If your design / idea still needs discussion, please close this PR and create a new discussion here.

This PR requires the following approvals before it can be merged:

• At least one approval from a Anza team member: t-nelson, sakridge, or bw-solana
• At least one approval from an Firedancer team member: ptaffet-jump, topointon-jump, 0x0ece, lidatong, or ripatel-fd

Once all requirements are met, you can merge this PR by commenting /merge.

[simd-bot]

Thanks, 0x0ece!

⚠️ Status: Cannot merge yet

• Missing approval from: Anza (t-nelson, sakridge, or bw-solana)