test: remove empty lines from snapshots

PR-URL: #56358
Backport-PR-URL: #56912
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Jacob Smith <jacob@frende.me>

Author: marco-ippolito

test/fixtures/eval/eval_messages.snapshot

@@ -21,27 +21,13 @@ throw new Error("hello")
 
 Error: hello
 
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 [eval]:1
 throw new Error("hello")
 ^
 
 Error: hello
 
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 [eval]:1
@@ -50,13 +36,6 @@ var x = 100; y = x;
 
 ReferenceError: y is not defined
 
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 [eval]:1

test/fixtures/eval/stdin_messages.snapshot

@@ -11,14 +11,6 @@ with(this){__filename}
 
 SyntaxError: Strict mode code may not include a with statement
 
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@@ -28,33 +20,13 @@ throw new Error("hello")
 
 Error: hello
 
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 [stdin]:1
 throw new Error("hello")
 ^
 
 Error: hello
 
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 [stdin]:1
@@ -63,16 +35,6 @@ let x = 100; y = x;
 
 ReferenceError: y is not defined
 
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test/parallel/test-node-output-eval.mjs

@@ -11,6 +11,7 @@ describe('eval output', { concurrency: true }, () => {
 
   const defaultTransform = snapshot.transform(
     removeStackTraces,
+    filterEmptyLines,
     normalize,
     snapshot.replaceWindowsLineEndings,
     snapshot.replaceWindowsPaths,
@@ -21,6 +22,10 @@ describe('eval output', { concurrency: true }, () => {
     return output.replaceAll(/^ *at .+$/gm, '');
   }
 
+  function filterEmptyLines(output) {
+    return output.replaceAll(/^\s*$/gm, '');
+  }
+
   const tests = [
     { name: 'eval/eval_messages.js' },
     { name: 'eval/stdin_messages.js' },