fix(rome_js_analyze): fix noShoutyConstants with empty string

[rosslh]

Summary

Closes #3867

Test Plan

cargo test -p rome_js_analyze -- shouty

With some new test cases which were missing:

const Empty = "";
export const E = Empty;

const NotMatching = "DoesNotMatch";
export const F = NotMatching;

const matchingLowercase = "matchingLowercase";
export const G = matchingLowercase;

const AL = "ALPHA";
export const H = AL;

const ALPHA = "AL";
export const I = ALPHA;

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[MichaReiser]

Nit: We can remove one of the is_lowercase checks below. Either they are both lowercase or both are not.

[MichaReiser]

Thank you!