create in transition even if intro is initialized

src/compiler/compile/render_dom/wrappers/Element/index.ts

@@ -754,7 +754,7 @@ export default class ElementWrapper extends Wrapper {
 					intro_block = b`
 						@add_render_callback(() => {
 							if (${outro_name}) ${outro_name}.end(1);
-							if (!${intro_name}) ${intro_name} = @create_in_transition(${this.var}, ${fn}, ${snippet});
+							${intro_name} = @create_in_transition(${this.var}, ${fn}, ${snippet});
 							${intro_name}.start();
 						});
 					`;

test/runtime/samples/transition-css-in-out-in/_config.js

@@ -15,6 +15,6 @@ export default {
 		component.visible = true;
 
 		// reset original styles
-		assert.equal(div.style.animation, '__svelte_3809512021_1 100ms linear 0ms 1 both');
+		assert.equal(div.style.animation, '__svelte_3809512021_0 100ms linear 0ms 1 both');
 	}
 };