fix: correctly validate `<svelte:component>` with `bind:this` (#12368)

.changeset/witty-sloths-impress.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: correctly validate `<svelte:component>` with `bind:this`

packages/svelte/src/internal/client/dom/elements/bindings/this.js

@@ -56,4 +56,6 @@ export function bind_this(element_or_component = {}, update, get_value, get_part
 			});
 		};
 	});
+
+	return element_or_component;
 }

packages/svelte/src/internal/client/validate.js

@@ -12,8 +12,9 @@ function is_void(tag) {
 }
 
 /**
- * @param {() => any} component_fn
- * @returns {any}
+ * @template Component
+ * @param {() => Component} component_fn
+ * @returns {Component}
  */
 export function validate_dynamic_component(component_fn) {
 	try {