enhance: page image component with alt text (#8634)

* refactor to composition API

* use existing image component

This improves user experience because alt text is displayed correctly.

* fix: correct image src

* fix: defineProps

* fix

packages/client/src/components/page/page.image.vue

 <template>
 <div class="lzyxtsnt">
-	<img v-if="image" :src="image.url"/>
+	<ImgWithBlurhash v-if="image" :hash="image.blurhash" :src="image.url" :alt="image.comment" :title="image.comment" :cover="false"/>
 </div>
 </template>
 
-<script lang="ts">
+<script lang="ts" setup>
 import { defineComponent, PropType } from 'vue';
+import ImgWithBlurhash from '@/components/img-with-blurhash.vue';
 import * as os from '@/os';
 import { ImageBlock } from '@/scripts/hpml/block';
 import { Hpml } from '@/scripts/hpml/evaluator';
 
-export default defineComponent({
-	props: {
-		block: {
-			type: Object as PropType<ImageBlock>,
-			required: true
-		},
-		hpml: {
-			type: Object as PropType<Hpml>,
-			required: true
-		}
-	},
-	setup(props, ctx) {
-		const image = props.hpml.page.attachedFiles.find(x => x.id === props.block.fileId);
+const props = defineProps<{
+	block: PropType<ImageBlock>,
+	hpml: PropType<Hpml>,
+}>();
 
-		return {
-			image
-		};
-	}
-});
+const image = props.hpml.page.attachedFiles.find(x => x.id === props.block.fileId);
 </script>
 
 <style lang="scss" scoped>