fix: fix tsconfig-less check errors, fix `@types/eslint` incompatibilities, add tests#8460

bradzacher merged 4 commits intomaintypescript-eslint/typescript-eslint:mainfrom

fix-ts-eslint-pkg-type-errors-sightypescript-eslint/typescript-eslint:fix-ts-eslint-pkg-type-errors-sighCopy head branch name to clipboard