refactor(toolkit): type source any with proper types

Genuinely type composable any usages (useStepper/useStorage/useForm/
createEventHook/useSorted/etc.) as proper generics/unknown; keep idiomatic
any-function and overload-impl signatures with comments; skipped test -> .todo.

vue/toolkit/src/composables/animation/useTransition/index.ts

@@ -4,6 +4,7 @@ import { clamp, isFunction, isNumber, lerp, noop } from '@robonen/stdlib';
 import { defaultWindow } from '@/types';
 import type { ConfigurableWindow } from '@/types';
 import { useRafFn } from '@/composables/animation/useRafFn';
+import { tryOnScopeDispose } from '@/composables/lifecycle/tryOnScopeDispose';
 
 /**
  * Cubic bezier control points `[x1, y1, x2, y2]` (the implied endpoints are
@@ -356,5 +357,10 @@ export function useTransition<T extends TransitionValue>(
     },
   );
 
+  // The RAF loop is torn down by useRafFn on scope dispose, but a pending start
+  // delay (window.setTimeout) is not — clear it so the timer can't fire into a
+  // disposed scope.
+  tryOnScopeDispose(clearDelay);
+
   return computed(() => outputRef.value);
 }