tools: fix C++ import checker argument expansion

src: fix linter failures

Fix linter failures when running the linter on all source files.

tools: fix C++ import checker argument expansion

Makefile assumes that it can pass a list of files to the import checker, whereas the import checker expects a single argument that is interpreted as a blob.

Fix that mismatch by accepting multiple arguments in the import checker.

Refs: https://github.com/nodejs/node/pull/34565

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• commit message follows commit guidelines