[utest]Fixed assertion failure in the smp_affinity_pri1_tc use case caused by improper priority configuration.

[Rbb666]

修复 ci 问题

将LOW_PRIORITY调整为合适的数值，避免断言

[github-actions]

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[github-actions]

📌 Code Review Assignment

🏷️ Tag: kernel

Reviewers: @GorrayLi @ReviewSun @hamburger-os @lianux-mm @wdfk-prog @xu18838022837

Changed Files (Click to expand)

• src/utest/smp/smp_affinity_pri1_tc.c

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📊 Current Review Status (Last Updated: 2025-11-18 17:17 CST)

• ⌛ @GorrayLi Pending Review
• ⌛ @ReviewSun Pending Review
• ⌛ @hamburger-os Pending Review
• ⌛ @lianux-mm Pending Review
• ⌛ @wdfk-prog Pending Review
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