fix(lint/useLiteralKeys): unescaped newline false positive

[Sec-ant]

Summary

Fixes #3160. This rule now ignores the following kind of computed member name:

const a = {
  [`line1
  line2`]: true,
};

Test Plan

Test cases added.

[codspeed-hq]

CodSpeed Performance Report

Merging #3210 will not alter performance

_{Comparing fix/use-literal-keys (3e284b5) with fix/use-literal-keys (350cbc1)}

Summary

✅ 90 untouched benchmarks