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=5.8.2&fileType=.ts&code=CYUwxgNghgTiAEYD2A7AzgF3gMyUgXPJjAJYoDmA3ALABQdoksC2ArimBiajigBS4CRDKQoBKQilYBbAEYgY8AD7x2obGRDAa9WsnRZZseAF4ceeADJLvAXjE748APTOnAPQD8dfZnhGAL1N-YyUVAA4AFh0gA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6Y6RAM0WlqYSNkAC1pkA9gEMkyMswDm6KL2jjokcGAC%2BILUA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA&tokens=false

Repro Code

declare const foo: string;

declare function fn(foo: string): number | undefined;

const bar = foo && fn(foo);
  //  ^?
const baz = bar || 84;

ESLint Config

module.exports = {
  "rules": {
    "@typescript-eslint/prefer-nullish-coalescing": "error"
  }
}

tsconfig

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

Expected Result

Should not report since the expressions are not equivalent and could produce a runtime error.

Actual Result

Reports error on the last line.

Additional Info

The expresion before || could be something other than a nullish value ('' or 0), so the operator shouldn't be changed to ??.