Stabilise flaky tests relying on bots (#31520)

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

playwright/e2e/pinned-messages/index.ts

@@ -29,6 +29,7 @@ export const test = base.extend<{
     room1Name: "Room 1",
     room1: async ({ room1Name: name, app, user, bot }, use) => {
         const roomId = await app.client.createRoom({ name, invite: [bot.credentials.userId] });
+        await bot.awaitRoomMembership(roomId);
         await use({ name, roomId });
     },
 

playwright/e2e/read-receipts/index.ts

@@ -36,11 +36,13 @@ export const test = base.extend<{
     roomAlphaName: "Room Alpha",
     roomAlpha: async ({ roomAlphaName: name, app, user, bot }, use) => {
         const roomId = await app.client.createRoom({ name, invite: [bot.credentials.userId] });
+        await bot.awaitRoomMembership(roomId);
         await use({ name, roomId });
     },
     roomBetaName: "Room Beta",
     roomBeta: async ({ roomBetaName: name, app, user, bot }, use) => {
         const roomId = await app.client.createRoom({ name, invite: [bot.credentials.userId] });
+        await bot.awaitRoomMembership(roomId);
         await use({ name, roomId });
     },
     msg: async ({ page, app, util }, use) => {

playwright/e2e/voip/element-call.spec.ts

@@ -264,6 +264,7 @@ test.describe("Element Call", () => {
                     preset: "trusted_private_chat" as Preset.TrustedPrivateChat,
                     invite: [bot.credentials.userId],
                 });
+                await bot.awaitRoomMembership(roomId);
                 await app.client.setAccountData("m.direct" as EventType.Direct, {
                     [bot.credentials.userId]: [roomId],
                 });