Guard browser OPFS direct session parameter values

wasm-port/tests/browser/interp_smoke.html

@@ -9372,16 +9372,13 @@
           "tool_index_for_tool_2=1",
         ],
       );
+      const browserInterpParameterValues = [12.34, 56.78, 9.87, 66.6];
+      const browserInterpParameterExpectedValues = ["12.34", "56.78", "9.87", "66.6"];
+      const browserInterpParameterReadbackValues = ["12.340000", "56.780000", "9.870000", "66.600000"];
       const savedParameters = await saveMachineParametersToOpfs(
         interp,
         browserInterpMachineId,
-        {
-          5161: 12.34,
-          5162: 56.78,
-          5220: 1.0,
-          5221: 9.87,
-          5399: 66.6,
-        },
+        opfsParameterValues(...browserInterpParameterValues),
         { wasmPath: browserInterpWasmPaths.parameters },
       );
       assertOpfsSavedParameterStaging(
@@ -9394,23 +9391,14 @@
       verifyOpfsSaveResult(
         "opfs_save_parameters",
         savedParameters,
-        [
-          "save_parameters=0",
-          "parameter_5161=12.34",
-          "parameter_5162=56.78",
-          "parameter_5221=9.87",
-          "parameter_5399=66.6",
-        ],
+        opfsParameterResultLines("save", ...browserInterpParameterExpectedValues),
       );
       await verifyOpfsMachineFileReadback(
         "opfs_saved_parameter_text",
         browserInterpMachineId,
         "parameters",
         [
-          "5161\t12.340000",
-          "5162\t56.780000",
-          "5221\t9.870000",
-          "5399\t66.600000",
+          ...opfsParameterTextLines("\t", ...browserInterpParameterReadbackValues),
           "absent=<_named_param>",
         ],
       );