--range-{start,end} is ignored for --config-precedence=prefer-file

Environments:

• Prettier Version: 2.3.0
• Running Prettier via: CLI
• Runtime: v16
• Operating System: Linux, macOS
• Prettier plugins (if any):

Steps to reproduce:

• Create file file.js

import {  a }  from 'a'  ;

import {b,  c  } from  'b-c';

• Create file .prettierrc.js

module.exports = {}

• Run cat file.js | prettier --stdin-filepath file.js --config-precedence=file-override --range-start 9 --range-end 10

import { a } from "a";

import {b,  c  } from  'b-c';

• Run cat file.js | prettier --stdin-filepath file.js --config-precedence=prefer-file --range-start 9 --range-end 10

import { a } from "a";

import { b, c } from "b-c";

Expected behavior:

Both output should be the same.

Actual behavior:

--config-precedence=prefer-file ignores --range-start and --range-end flags.

Reproduce the issue with file.js, .prettierrc.js, and the two prettier CLI commands shown in the report. Start by tracing CLI handling for --config-precedence, --range-start, and --range-end; done means both precedence modes produce the same range-limited output.