Bug(type-utils): Node.js' `Buffer` cannot be matched with a `{ type: package }` `TypeOrValueSpecifier`

[abrahamguo]

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• [X] I have tried restarting my IDE and the issue persists.
• [X] I have updated to the latest version of the packages.
• [X] I have searched for related issues and found none that matched my issue.
• [X] I have read the FAQ and my problem is not listed.

Issue Description

• Inside TypeOrValueSpecifier => typeDeclaredInDeclarationFile:
• when declaration.path is /.../typescript-eslint/node_modules/@types/node/buffer.d.ts
• program.sourceFileToPackageName.get(declaration.path) returns undefined
• thus, causing the specifier { from: 'package', name: 'Buffer', package: '...anything...' } to not match

It looks like this broke in #6870.

Reproduction Repository Link

https://github.com/abrahamguo/repro/tree/buffer

Repro Steps

1. clone the repo
2. npm i
3. npx eslint index.ts

Versions

package	version
@typescript-eslint/eslint-plugin	8.8.0
@typescript-eslint/parser	8.8.0
@typescript-eslint/scope-manager	8.8.0
@typescript-eslint/typescript-estree	8.8.0
@typescript-eslint/type-utils	8.8.0
@typescript-eslint/utils	8.8.0
TypeScript	5.6.2
ESLint	9.11.1
node	22.8.0