feat(tests): add e2e tests for widgets (#8735)

* test(e2e): add baseline for widget tests

* chore(repo): enable test running in branch

* fix(e2e): set viewport for widget tests

* fix(client): add widget identifier classes to widgets

* test(e2e): add memo widget test

* fix(tests): force select value

* fix(tests): force button press for widget addition

* fix(tests): invoke select value differently

* fix(tests): adjust widget submit

* fix(tests): don't explicitly navigate for widget test

* fix(tests): click label to hide select popup

* fix(tests): just click modal background

* fix(tests): adjust modal background selector

* fix(tests): click all modal backgrounds

* feat(e2e): add test for adding timeline widget

* fix(client): add more widget identifier classes

* feat(tests): add method abstraction for test cases

* fix(tests): force-click overlays

* fix(tests): force widget button press

* fix(tests): remove timeout from final widget check

* feat(tests): add widget removal test case

* fix(client): use mk instead of msky as class prefix

* fix(tests): check widgets for existence rather than visibility

* chore(meta): don't run tests for specific feature branch

packages/client/src/components/widgets.vue

@@ -2,11 +2,11 @@
 <div class="vjoppmmu">
 	<template v-if="edit">
 		<header>
-			<MkSelect v-model="widgetAdderSelected" style="margin-bottom: var(--margin)">
+			<MkSelect v-model="widgetAdderSelected" style="margin-bottom: var(--margin)" class="mk-widget-select">
 				<template #label>{{ $ts.selectWidget }}</template>
 				<option v-for="widget in widgetDefs" :key="widget" :value="widget">{{ $t(`_widgets.${widget}`) }}</option>
 			</MkSelect>
-			<MkButton inline primary @click="addWidget"><i class="fas fa-plus"></i> {{ $ts.add }}</MkButton>
+			<MkButton inline primary class="mk-widget-add" @click="addWidget"><i class="fas fa-plus"></i> {{ $ts.add }}</MkButton>
 			<MkButton inline @click="$emit('exit')">{{ $ts.close }}</MkButton>
 		</header>
 		<XDraggable