fix: add symbolic name to buttonAnimationInjectionKey to improve readability

src/components/button-animation/injection.ts

@@ -1,4 +1,4 @@
 import type { ButtonAnimationProps } from './interface'
 import type { InjectionKey } from 'vue'
 
-export const buttonAnimationInjectionKey = Symbol() as InjectionKey<Partial<ButtonAnimationProps>>
+export const buttonAnimationInjectionKey: InjectionKey<Partial<ButtonAnimationProps>> = Symbol('buttonAnimationInjectionKey')