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Issue Description

Type of variable channel is TextChannel, which has a correct .toString method. The type of variable channel has been checked by debugging the typescript-eslint rule, using checker.typeToString.
Other debugging shows that parent expression, channel.toString, is of type

(() => `<#${string}>`) & (() => string)

For clarification purpose, .toString is directly called, but done under the hood by JavaScript, and TypeScript & typescript-eslint understand that, so the result is the same.

Reproduction Repository Link

https://github.com/Catatomik/eslint-ts-fpos-no-base-to-string

Repro Steps

1. clone the repo
2. pnpm install
3. npm run lint

Versions