fix: Initialize theme to 'dark'

Signed-off-by: Akshat Patel <[email protected]>

Author: Akshat55

src/timepicker/timepicker.component.ts

@@ -94,7 +94,7 @@ export class TimePicker implements ControlValueAccessor {
 	 * Theme property binding will be deprecated in next major version
 	 * Use layers instead
 	 */
-	@Input() theme: "light" | "dark";
+	@Input() theme: "light" | "dark" = "dark";
 
 	/**
 	 * `sm`, `md` (default), or `lg` select size