refactor(ui): migrate button and pagination components to radix-vue

- Replace reka-ui imports with radix-vue in Button component
- Update pagination components to use direct radix-vue icons
- Simplify button variants styling and adjust size variants
- Remove unused data-slot attribute from Button component

app/components/pub/ui/button/Button.vue

@@ -1,9 +1,9 @@
 <script setup lang="ts">
-import type { PrimitiveProps } from 'reka-ui'
+import type { PrimitiveProps } from 'radix-vue'
 import type { HTMLAttributes } from 'vue'
 import type { ButtonVariants } from '.'
-import { Primitive } from 'reka-ui'
 import { cn } from '~/lib/utils'
+import { Primitive } from 'radix-vue'
 import { buttonVariants } from '.'
 
 interface Props extends PrimitiveProps {
@@ -19,7 +19,6 @@ const props = withDefaults(defineProps<Props>(), {
 
 <template>
   <Primitive
-    data-slot="button"
     :as="as"
     :as-child="asChild"
     :class="cn(buttonVariants({ variant, size }), props.class)"