CSS: out-of-memory/hang target:safari11

The following input causes esbuild to hang/consume a lot of memory (over 100 GB):
```css
.slider-section{height: auto;padding-top: .first-sec, .slider-section{height: auto;padding-top: .first-sec, .slider-section{ height: auto; padding-top: .first-sec, .slider-section{ height: auto; padding-top: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{height: auto;padding-top: .first-sec, .slider-section{height: auto;padding-top: .first-sec, .slider-section{ height: auto; padding-top: .first-sec, .slider-section{ height: auto; padding-top: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{height: auto;padding-top: .first-sec, .slider-section{height: auto;padding-top: .first-sec, .slider-section{ height: auto; padding-top: .first-sec, .slider-section{ height: auto; padding-top: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec, .slider-section{ height: auto; padding-bottom: .first-sec
```
**Command line:**
`esbuild --target=safari11 input.css`

[esbuild try target=safari11](https://esbuild.github.io/try/#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)

For `--target=safari14` this issue started to appear with v0.25.0:
[esbuild try target=safari14](https://esbuild.github.io/try/#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)

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CSS: out-of-memory/hang target:safari11 #4114

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CSS: out-of-memory/hang target:safari11 #4114

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