fix: e2e tests

Author: OtavioStasiak

app/containers/CustomHeader/index.tsx

@@ -43,7 +43,7 @@ const CustomHeader = ({ options, navigation, route }: IHeader) => {
 					labelVisible={false}
 					onPress={() => navigation.goBack()}
 					tintColor={colors.fontDefault}
-					testID='header-back'
+					testID='custom-header-back'
 					style={styles.headerBackButton}
 				/>
 			)}

app/views/TeamChannelsView.tsx

@@ -233,13 +233,13 @@ class TeamChannelsView extends React.Component<ITeamChannelsViewProps, ITeamChan
 				headerTitle: () => (
 					<SearchHeader onSearchChangeText={this.onSearchChangeText} testID='team-channels-view-search-header' />
 				),
-				headerRight: () => null
+				headerRight: undefined
 			};
 			return navigation.setOptions(options);
 		}
 
 		const options: NativeStackNavigationOptions = {
-			headerLeft: () => null,
+			headerLeft: undefined,
 			headerTitle: () => (
 				<RoomHeader title={getRoomTitle(team)} subtitle={team.topic} type={team.t} onPress={this.goRoomActionsView} teamMain />
 			),

app/views/ThreadMessagesView/index.tsx

@@ -124,7 +124,7 @@ class ThreadMessagesView extends React.Component<IThreadMessagesViewProps, IThre
 		}
 
 		const options: NativeStackNavigationOptions = {
-			headerLeft: () => null,
+			headerLeft: undefined,
 			headerTitle: I18n.t('Threads'),
 			headerRight: () => (
 				<HeaderButton.Container>

e2e/helpers/app.ts

@@ -129,7 +129,7 @@ async function mockMessage(message: string, isThread = false) {
 async function tapBack() {
 	if (device.getPlatform() === 'ios') {
 		try {
-			await element(by.type('UIAccessibilityBackButtonElement')).tap();
+			await element(by.id('custom-header-back')).atIndex(0).tap();
 		} catch (error) {
 			await element(by.id('header-back')).atIndex(0).tap();
 		}