JoltPhysics/RapierPhysics: Fix some warning messages (#29315)

examples/jsm/physics/JoltPhysics.js

@@ -61,7 +61,7 @@ async function JoltPhysics() {
 
 	if ( Jolt === null ) {
 
-		const { default: initJolt } = await import( JOLT_PATH );
+		const { default: initJolt } = await import( `${JOLT_PATH}` );
 		Jolt = await initJolt();
 
 	}

examples/jsm/physics/RapierPhysics.js

@@ -58,7 +58,7 @@ async function RapierPhysics() {
 
 	if ( RAPIER === null ) {
 
-		RAPIER = await import( RAPIER_PATH );
+		RAPIER = await import( `${RAPIER_PATH}` );
 		await RAPIER.init();
 
 	}