Use FontAwesome as web font instead of vue component (#7469)

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* Update yarn.lock

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src/client/pages/_error_.vue

@@ -3,7 +3,7 @@
 	<div class="_section">
 		<div class="mjndxjch _content">
 			<img src="https://xn--931a.moe/assets/error.jpg" class="_ghost"/>
-			<p><Fa :icon="faExclamationTriangle"/> {{ $ts.pageLoadError }}</p>
+			<p><i class="fas fa-exclamation-triangle"></i> {{ $ts.pageLoadError }}</p>
 			<p>{{ $ts.pageLoadErrorDescription }}</p>
 		</div>
 	</div>
@@ -12,7 +12,6 @@
 
 <script lang="ts">
 import { defineComponent } from 'vue';
-import { faExclamationTriangle } from '@fortawesome/free-solid-svg-icons';
 import MkButton from '@client/components/ui/button.vue';
 import * as symbols from '@client/symbols';
 
@@ -24,9 +23,8 @@ export default defineComponent({
 		return {
 			[symbols.PAGE_INFO]: {
 				title: this.$ts.error,
-				icon: faExclamationTriangle
+				icon: 'fas fa-exclamation-triangle'
 			},
-			faExclamationTriangle
 		};
 	},
 });