auditbeat TestExeObjParser - fix errors.Is argument order

[andrewkroh]

Proposed commit message

The arguments to errors.Is are in the wrong order so the check is not working as designed and the test was never skipped.

Also stop the test after exeObjParser.Parse fails.

Relates: #38211

How to test this PR locally

cd auditbeat/module/file_integrity
rm ./testdata/garble_macho_executable
CI=true go test -run TestExeObjParser -v .

[botelastic]

This pull request doesn't have a Team:<team> label.

[mergify]

This pull request does not have a backport label.
If this is a bug or security fix, could you label this PR @andrewkroh? 🙏.
For such, you'll need to label your PR with:

• The upcoming major version of the Elastic Stack
• The upcoming minor version of the Elastic Stack (if you're not pushing a breaking change)

To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v8./d.0 is the label to automatically backport to the 8./d branch. /d is the digit

[elasticmachine]

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[pkoutsovasilis]

LGTM