fix unwanted phone number field clearing

src/lib/components/Input/Input.svelte

@@ -95,9 +95,9 @@
 						value = e.target?.value;
 						if (pattern && !pattern.test(e.target?.value)) {
 							if (inputElement?.value.endsWith(e.data)) {
-								value = e.target?.value.substring(0, -e.data.length);
+								value = e.target?.value.substring(0, e.target?.value.length - e.data.length);
 							}
-							return false;
+							return;
 						}
 						return input(e);
 					}}