[Interface-name] Never prefix return error for I18nInterface

[VincentLanglet]

Bug Report

• TSLint version: 5.12.1
• TypeScript version: 3.2.4
• Running TSLint via: CLI / PhpStorm

TypeScript code being linted

interface I18nInterface {
  foo: () => void;
}

with tslint.json configuration:

{
  "extends": ["tslint:all"],
  "rules": {
    "interface-name": [true, "never-prefix"]
  }
}

Actual behavior

Got error "Interface must not have an I prefix

Expected behavior

No error, I18n should be an allowed word.
Don't know if we have to allow ^I\d+ interfaces or just ^I18n ones.

[adidahiya]

looks like a bug. there's already a special case in the rule for IDB, might as well add one for I18

[adidahiya]

Fixed by #4486 #4655