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=5.5.2&fileType=.ts&code=CYUwxgNghgTiAEEQBd5QFzwM7JgSwDsBzeAH3gIFcIIBuAKFElgTAHsCd4AjTHfYmQrU69PADN4ACilQypALw8AlMvgBvegF96AdwAWeJNNnyl3VRp1zSinvCA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6Y6RAM0WlqYSNkAC1pkA9gEMkyMswDm6MAG1w2HL2jjokNRAC6agL4gjQA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA&tokens=false

Repro Code

declare let a: string | null;
declare const b: string | null;
if ((a ||= b)) {
}
while ((a ||= b)) {}
a ||= b

ESLint Config

module.exports = {
  parser: "@typescript-eslint/parser",
  rules: {
    "@typescript-eslint/prefer-nullish-coalescing": [
      "error"
    ]  
  },
};

tsconfig

{
  "compilerOptions": {
   "strictNullChecks": true
  }
}

Expected Result

a ||= b code has error and convert to a??=b

Actual Result

nothing happens

Additional Info

I looked at the actual rule code, and I don't see code or test code related to the ||= operator.

I wonder if this requires a rule fix or a document fix.