fix: undefined functions/properties across frontend (#4210)

* fix: notification mark as read

* revert: composition API change

* fix: categories

* feat: enable vue/no-undef-properties in 'warn' mode.

* fix: app undefined properties

* revert: ss block

* fix: eslint-disable for [version].vue

apps/app-frontend/src/components/ui/InstanceCreationModal.vue

@@ -110,7 +110,7 @@
 							placeholder="Path to launcher"
 							@change="setPath"
 						/>
-						<Button class="r-btn" @click="() => (selectedLauncherPath = '')">
+						<Button class="r-btn" @click="() => (selectedProfileType.path = '')">
 							<XIcon />
 						</Button>
 					</div>

apps/app-frontend/src/components/ui/SplashScreen.vue

@@ -1,10 +1,14 @@
 <template>
 	<div v-if="!hidden" class="splash-screen dark" :class="{ 'fade-out': doneLoading }">
 		<div v-if="os !== 'MacOS'" class="app-buttons">
-			<button class="btn icon-only transparent" icon-only @click="() => getCurrent().minimize()">
+			<button
+				class="btn icon-only transparent"
+				icon-only
+				@click="() => getCurrentWindow().minimize()"
+			>
 				<MinimizeIcon />
 			</button>
-			<button class="btn icon-only transparent" @click="() => getCurrent().toggleMaximize()">
+			<button class="btn icon-only transparent" @click="() => getCurrentWindow().toggleMaximize()">
 				<MaximizeIcon />
 			</button>
 			<button class="btn icon-only transparent" @click="handleClose">