E2E/Playwright: Instantiate page in pw (#29765)

* instantiate page in pw

* update spec

* fix storage key and require user when logging in via API

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Co-authored-by: Mattermost Build <build@mattermost.com>

e2e-tests/playwright/tests/client/upload_file.spec.ts

@@ -22,7 +22,7 @@ const mimeType = 'image/png';
 const {file} = getFileDataFromAsset(filename, mimeType);
 const {blob} = getBlobDataFromAsset(filename, mimeType);
 
-test.beforeAll(async ({pw}) => {
+test.beforeEach(async ({pw}) => {
     ({userClient, user, team} = await pw.initSetup());
     townSquareChannel = await userClient.getChannelByName(team.id, 'town-square');
 });