Guard good arc staging paths

wasm-port/tests/wasm/node/verify_interp_wasm.mjs

@@ -2029,8 +2029,10 @@ assert.deepEqual(
   interpRegressionNgcFiles("good"),
   "interp good fixture coverage drift",
 );
+const goodArcStagedNgcFiles = [];
 for (const goodArcFixture of goodArcFixtures) {
   const goodArcPath = writeInterpRegressionFile("good", goodArcFixture.file);
+  goodArcStagedNgcFiles.push(goodArcPath);
   verifyExpectedOutput(
     `interp_good_arc_${goodArcFixture.name}_wasm`,
     interp.runFile(goodArcPath),
@@ -2046,6 +2048,11 @@ for (const goodArcFixture of goodArcFixtures) {
     ].join("\n"),
   );
 }
+assert.deepEqual(
+  goodArcStagedNgcFiles,
+  goodArcFixtures.map((fixture) => `/work/interp/good/${fixture.file}`),
+  "interp good staging manifest drift",
+);
 
 const g6164Path = writeInterpRegressionFile("g6164", "test.ngc");
 const g6164NgcFiles = [