Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have searched for related issues and found none that matched my issue.
• I have read the FAQ and my problem is not listed.

Playground Link

https://typescript-eslint.io/play/#ts=5.7.2&fileType=.tsx&code=CYUwxgNghgTiAEkoGdnwKIA8oFsAOECA3gLABQ88yALlNQJZjwDEeM9AbnSALIjUALAPbAAjAAooALngA7AK44ARiBgBKGRyH1gAbnKUadRizadufQSIBMkmQuWqANPCUB%2BGTXayA5hvhaOvpkAL5AA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6WJygM0sQBNaySgHMmAQ3yxoKdFETRoAe2iRwYAL4h1QA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA&tokens=false

Repro Code

class Example {
  static #privateMethod1(a: number): void;
  static #privateMethod2(a: number, b?: string): void;
}

ESLint Config

{
  "rules": {
    "@typescript-eslint/unified-signatures": "error"
  }
}

tsconfig

Expected Result

No error.

Actual Result

These overloads can be combined into one signature with an optional parameter.

Additional Info

No response