fix: Correct ignore message for "node_modules" subfolders

[fasttime]

Prerequisites checklist

• I have read the contributing guidelines.

What is the purpose of this pull request? (put an "X" next to an item)

[ ] Documentation update
[x] Bug fix (template)
[ ] New rule (template)
[ ] Changes an existing rule (template)
[ ] Add autofix to a rule
[ ] Add a CLI option
[ ] Add something to the core
[ ] Other, please explain:

Tell us about your environment (npx eslint --env-info):

Node version: v18.16.0
npm version: v9.5.1
Local ESLint version: v8.41.0 (Currently used)
Global ESLint version: Not found
Operating System: darwin 22.2.0

What parser are you using (place an "X" next to just one item)?

none

Please show your full configuration:

no configuration

What did you do? Please include the actual source code causing the issue.

In a terminal, I set the environment variable ESLINT_USE_FLAT_CONFIG="true". Then I ran:

cd ..
node eslint/bin/eslint.js --no-config-lookup eslint/node_modules/espree/espree.js

What did you expect to happen?

A warning message suggesting to use the ignore pattern "!**/node_modules/" to unignore the provided file.

What actually happened? Please include the actual, raw output from ESLint.

The warning message suggests to use the CLI option --no-ignore, but that doesn't work to unignore predefined ignore patterns.

.../eslint/node_modules/espree/espree.js
  0:0  warning  File ignored because of a matching ignore pattern. Use "--no-ignore" to override

✖ 1 problem (0 errors, 1 warning)

In fact, re-running with the --no-ignore option produces the same output.

What changes did you make? (Give an overview)

I updated the logic that decides which warning message should be printed when an ignored file is reported. There is already a message that fits the case of an ignored file under node_modules:

eslint/lib/eslint/eslint-helpers.js

Line 597 in 9b62ae0

message = "File ignored by default because it is located under the node_modules directory. Use ignore pattern \"!**/node_modules/\" to override.";

After my change, this message will be reported for all files under node_modules folders, not just when the node_modules folder is located in the working directory. This also fixes an incorrect match for files whose name starts with "node_modules".

Is there anything you'd like reviewers to focus on?

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[mdjermanovic]

LGTM, thanks!