fix(provider): [theme] no hint when passing props

Author: akinoccc

packages/core/src/providers/theme.ts

@@ -1,5 +1,7 @@
 import { defineComponent, h, PropType, provide, ref, watch } from 'vue'
 
+export type DefaultTheme = Record<string, any>
+
 export const ThemeProvider = defineComponent(
   (props, { slots }) => {
     const theme = ref(props.theme)
@@ -23,7 +25,7 @@ export const ThemeProvider = defineComponent(
     name: 'ThemeProvider',
     props: {
       theme: {
-        type: Object as PropType<Record<string, string | number>>,
+        type: Object as PropType<DefaultTheme>,
         required: true,
         default: () => {},
       },