Use polling-based VM traps on Linux

[Jarred-Sumner]

What does this PR do?

SIGUSR1 triggers GC on Linux

This is confusing and likely leads to some hangs

Let's try enabling polling-based VM traps

How did you verify your code works?

[robobun]

^{Updated 11:49 PM PT - Jan 2nd, 2025}

❌ @Jarred-Sumner, your commit 6a92302 has 1 failures in #8866:

• test/js/bun/http/serve-body-leak.test.ts - timeout on 🪟 2019 x64-baseline
• test/js/bun/http/serve-body-leak.test.ts - timeout on 🪟 2019 x64

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🧪   try this PR locally:

bunx bun-pr 16126