[wasm][nodejs] enable EH for unit tests (#85387)

Author: pavelsavara

eng/testing/WasmRunnerAOTTemplate.sh

@@ -35,7 +35,7 @@ fi
 
 if [[ "$XHARNESS_COMMAND" == "test" ]]; then
 	if [[ -z "$JS_ENGINE_ARGS" ]]; then
-		JS_ENGINE_ARGS="--engine-arg=--stack-trace-limit=1000"
+		JS_ENGINE_ARGS="--engine-arg=--stack-trace-limit=1000 --engine-arg=--experimental-wasm-eh"
 	fi
 
 	if [[ -z "$JS_ENGINE" ]]; then

eng/testing/WasmRunnerTemplate.cmd

@@ -45,7 +45,7 @@ if /I [%XHARNESS_COMMAND%] == [test] (
     )
 
     if [%JS_ENGINE_ARGS%] == [] (
-        set "JS_ENGINE_ARGS=--engine-arg^=--stack-trace-limit^=1000"
+        set "JS_ENGINE_ARGS=--engine-arg^=--stack-trace-limit^=1000 --engine-arg^=--experimental-wasm-eh"
     )
 ) else (
     if [%BROWSER_PATH%] == [] if not [%HELIX_CORRELATION_PAYLOAD%] == [] (

eng/testing/WasmRunnerTemplate.sh

@@ -47,7 +47,7 @@ if [[ "$XHARNESS_COMMAND" == "test" ]]; then
 	fi
 
 	if [[ -z "$JS_ENGINE_ARGS" ]]; then
-		JS_ENGINE_ARGS="--engine-arg=--stack-trace-limit=1000"
+		JS_ENGINE_ARGS="--engine-arg=--stack-trace-limit=1000 --engine-arg=--experimental-wasm-eh"
 	fi
 fi