DEV: migrate ignored-user-list to gjs (#27800)

I removed the `this.saving` behavior part as it's not really useful and was not working as expected anyways.

app/assets/javascripts/discourse/app/components/ignored-user-list.gjs

@@ -0,0 +1,65 @@
+import Component from "@glimmer/component";
+import { action } from "@ember/object";
+import { service } from "@ember/service";
+import DButton from "discourse/components/d-button";
+import { popupAjaxError } from "discourse/lib/ajax-error";
+import User from "discourse/models/user";
+import i18n from "discourse-common/helpers/i18n";
+import IgnoredUserListItem from "./ignored-user-list-item";
+import IgnoreDurationModal from "./modal/ignore-duration-with-username";
+
+export default class IgnoredUserList extends Component {
+  @service modal;
+
+  @action
+  async removeIgnoredUser(item) {
+    this.args.items.removeObject(item);
+
+    try {
+      const user = await User.findByUsername(item);
+      await user.updateNotificationLevel({
+        level: "normal",
+        actingUser: this.args.model,
+      });
+    } catch (e) {
+      popupAjaxError(e);
+    }
+  }
+
+  @action
+  newIgnoredUser() {
+    this.modal.show(IgnoreDurationModal, {
+      model: {
+        actingUser: this.args.model,
+        ignoredUsername: null,
+        onUserIgnored: (username) => {
+          this.args.items.addObject(username);
+        },
+      },
+    });
+  }
+
+  <template>
+    <div>
+      <div class="ignored-list">
+        {{#each @items as |item|}}
+          <IgnoredUserListItem
+            @item={{item}}
+            @onRemoveIgnoredUser={{this.removeIgnoredUser}}
+          />
+        {{else}}
+          {{i18n "user.user_notifications.ignore_no_users"}}
+        {{/each}}
+      </div>
+      <div class="instructions">{{i18n "user.ignored_users_instructions"}}</div>
+      <div>
+        <DButton
+          @action={{this.newIgnoredUser}}
+          @icon="plus"
+          @label="user.user_notifications.add_ignored_user"
+          class="btn-default"
+        />
+      </div>
+    </div>
+  </template>
+}

app/assets/javascripts/discourse/app/components/ignored-user-list.hbs

@@ -1,17 +0,0 @@
-<div class="ignored-list">
-  {{#each this.items as |item|}}
-    <IgnoredUserListItem
-      @item={{item}}
-      @onRemoveIgnoredUser={{action "removeIgnoredUser"}}
-    />
-  {{else}}
-    {{i18n "user.user_notifications.ignore_no_users"}}
-  {{/each}}
-</div>
-<div class="instructions">{{i18n "user.ignored_users_instructions"}}</div>
-<div><DButton
-    @action={{action "newIgnoredUser"}}
-    @icon="plus"
-    @label="user.user_notifications.add_ignored_user"
-    class="btn-default"
-  /></div>

app/assets/javascripts/discourse/app/components/ignored-user-list.js

@@ -1,36 +0,0 @@
-import Component from "@ember/component";
-import { service } from "@ember/service";
-import { popupAjaxError } from "discourse/lib/ajax-error";
-import User from "discourse/models/user";
-import IgnoreDurationModal from "./modal/ignore-duration-with-username";
-
-export default Component.extend({
-  modal: service(),
-  item: null,
-  actions: {
-    removeIgnoredUser(item) {
-      this.set("saved", false);
-      this.items.removeObject(item);
-      User.findByUsername(item).then((user) => {
-        user
-          .updateNotificationLevel({
-            level: "normal",
-            actingUser: this.model,
-          })
-          .catch(popupAjaxError)
-          .finally(() => this.set("saved", true));
-      });
-    },
-    newIgnoredUser() {
-      this.modal.show(IgnoreDurationModal, {
-        model: {
-          actingUser: this.model,
-          ignoredUsername: null,
-          onUserIgnored: (username) => {
-            this.items.addObject(username);
-          },
-        },
-      });
-    },
-  },
-});

app/assets/javascripts/discourse/app/templates/preferences/users.hbs

@@ -8,7 +8,6 @@
       <IgnoredUserList
         @model={{this.model}}
         @items={{this.model.ignored_usernames}}
-        @saving={{this.saved}}
       />
     </div>
   </div>