fix(es/minifier): Remove hack for built-in class names

[kdy1]

Description:

Regarding vercel/next.js#55682, I made a mistake while investigating. I assumed it's swcMinify-only but it seems like node-fetch is fundamentally incompatible with our minification options.

I thought node-fetch works with terser, but it did not, and it should not. But as I thought terser works, I assumed that terser has a hack for AbortSignal. And that's how I fixed swcMinify: true. The correct fix is keep_classnames: true but it will result in +~10% bundle size bloat.
At first, I used the correct way (keep_classnames: true), but it resulted in the bundle size bloat, so I mimicked the hack of terser with vercel/next.js#57904.

While working on other minification issues, I found that there's no such hack in terser and I need to remove the hack in the SWC minifier.
The repro in vercel/next.js#55682 does not work with swcMinify: false, even with next@14. The problem of minifier and node-fetch was not exploited before serverMinification: true.

Related issue:

• Cannot read properties of undefined (reading 'sqrt') brix/crypto-js#415

[kdy1]

Cause is #8205

[kdy1]

swc-bump:

• swc_ecma_transforms_base