fix(lint/noNonNullAssertion): dont create an incorrect unsafe fix for x[y.z!]

[ah-yu]

Summary

Closes #1748

Now we won't create an unsafe fix for the NoNonNullAssertion rule for the following case

x[y.z!]

Test Plan

Add a new test case

[netlify]

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Lighthouse	1 paths audited Performance: 95 (🔴 down 5 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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[codspeed-hq]

CodSpeed Performance Report

Merging #1757 will degrade performances by 6.45%

_{⚠️ No base runs were found}

_{Falling back to comparing ah-yu:non_null_assertion_action (ed18e85) with main (1646ddb)}

Summary

❌ 1 regressions
✅ 92 untouched benchmarks

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

Benchmarks breakdown

	Benchmark	main	ah-yu:non_null_assertion_action	Change
❌	router.ts[uncached]	12.5 ms	13.4 ms	-6.45%

[Conaclos]

Thanks!

[ifteneiftene]

Ok bien