Render poll end events in timeline (#10027)

* wip

* remove dupe

* use poll model relations in all cases

* update mpollbody tests to use poll instance

* update poll fetching login in pinned messages card

* add pinned polls to room polls state

* add spinner while relations are still loading

* handle no poll in end poll dialog

* strict errors

* render a poll body that errors for poll end events

* add fetching logic to pollend tile

* extract poll testing utilities

* test mpollend

* strict fix

* more strict fix

* strict fix for forwardref

* update poll test utils

* implicit anys

* tidy and add jsdoc

res/css/_components.pcss

@@ -236,6 +236,7 @@
 @import "./views/messages/_MLocationBody.pcss";
 @import "./views/messages/_MNoticeBody.pcss";
 @import "./views/messages/_MPollBody.pcss";
+@import "./views/messages/_MPollEndBody.pcss";
 @import "./views/messages/_MStickerBody.pcss";
 @import "./views/messages/_MTextBody.pcss";
 @import "./views/messages/_MVideoBody.pcss";

res/css/views/messages/_MPollEndBody.pcss

@@ -0,0 +1,22 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.mx_MPollEndBody_icon {
+    height: 14px;
+    margin-right: $spacing-8;
+    vertical-align: middle;
+    color: $secondary-content;
+}

res/img/element-icons/room/composer/poll.svg

@@ -1,5 +1,5 @@
 <svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M3 9.5C3 9.22386 3.22386 9 3.5 9H6.5C6.77614 9 7 9.22386 7 9.5V22H3V9.5Z" fill="#C1C6CD"/>
-<path d="M17 13.5C17 13.2239 17.2239 13 17.5 13H20.5C20.7761 13 21 13.2239 21 13.5V22H17V13.5Z" fill="#C1C6CD"/>
-<path d="M10 2.5C10 2.22386 10.2239 2 10.5 2H13.5C13.7761 2 14 2.22386 14 2.5V22H10V2.5Z" fill="#C1C6CD"/>
+<path d="M3 9.5C3 9.22386 3.22386 9 3.5 9H6.5C6.77614 9 7 9.22386 7 9.5V22H3V9.5Z" fill="currentColor"/>
+<path d="M17 13.5C17 13.2239 17.2239 13 17.5 13H20.5C20.7761 13 21 13.2239 21 13.5V22H17V13.5Z" fill="currentColor"/>
+<path d="M10 2.5C10 2.22386 10.2239 2 10.5 2H13.5C13.7761 2 14 2.22386 14 2.5V22H10V2.5Z" fill="currentColor"/>
 </svg>