fix(noSuperWithoutExtends): detect class expressions

[Sec-ant]

Summary

This rule should also check the extends clause of a class expression.

Fixes #2108.

Test Plan

I added a valid test case:

class A {}
class B {
	a = class extends A {
		constructor(_) {
			super();
		}
	};
}

[netlify]

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Lighthouse	1 paths audited Performance: 100 (no change from production) Accessibility: 97 (no change from production) Best Practices: 100 (no change from production) SEO: 93 (no change from production) PWA: - View the detailed breakdown and full score reports

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[ematipico]

Great fix!

[codspeed-hq]

CodSpeed Performance Report

Merging #2113 will degrade performances by 6.97%

_{Comparing Sec-ant:fix/noSuperWithoutExtends (0ac9123) with main (c6cf7e5)}

Summary

❌ 1 regressions
✅ 92 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	Sec-ant:fix/noSuperWithoutExtends	Change
❌	eucjp.json[cached]	4.2 ms	4.5 ms	-6.97%