Guard browser OPFS session wasm map helper

wasm-port/tests/browser/interp_smoke.html

@@ -4549,6 +4549,10 @@
       return `/work/${filename}`;
     }
 
+    function opfsSessionWasmPaths(ini, parameters, toolTable) {
+      return { ini, parameters, toolTable };
+    }
+
     function opfsCustomSessionPaths(machineId, parameterFilename, toolTableFilename, iniWasmPath) {
       return {
         opfs: {
@@ -9169,11 +9173,11 @@
         loadedSession,
         browserInterpMachineId,
         {
-          wasm: {
-            ini: browserInterpIniWasmPath,
-            parameters: browserInterpParameterWasmPath,
-            toolTable: browserInterpToolTableWasmPath,
-          },
+          wasm: opfsSessionWasmPaths(
+            browserInterpIniWasmPath,
+            browserInterpParameterWasmPath,
+            browserInterpToolTableWasmPath,
+          ),
         },
       );
       verifyExpectedOutput(
@@ -9340,11 +9344,11 @@
         loadedRandomSession,
         browserRandomMachineId,
         {
-          wasm: {
-            ini: browserRandomIniWasmPath,
-            parameters: browserRandomParameterWasmPath,
-            toolTable: browserRandomToolTableWasmPath,
-          },
+          wasm: opfsSessionWasmPaths(
+            browserRandomIniWasmPath,
+            browserRandomParameterWasmPath,
+            browserRandomToolTableWasmPath,
+          ),
         },
       );
       verifyExpectedOutput(