Don't bother with a rule merger if rule arguments are the same

[JoshuaKGoldberg]

Overview

As noted in #1085: some community rulesets have overlapping rules to others with the same output ESLint rules: e.g. both convertAdjacentOverloadSignatures and convertConsecutiveOverloads outputting @typescript-eslint/adjacent-overload-signatures.

Actual Behavior

A rule merger will be requested the second+ time an ESLint rule is seen in a converter's output: even if it outputs the same rule arguments as the ESLint rule's previously output rule arguments.

Expected Behavior

A rule merger should only be called for if an ESLint's rules are seen a second+ time with new rule arguments.

[Res42]

I'll do it.