FEEDS-1195: Skip user flagging tests when moderation not enabled (#635)

* test: skip client.flagUser() integration test

The client.flagUser() test requires moderation features to be enabled
on the account. Skipping this test to prevent CI failures.

* test: conditionally run user flagging tests based on APP_ID

Only run user flagging tests when APP_ID is 16792 (account with moderation enabled).
This prevents test failures in environments without moderation features (e.g., StreamAPI repo).

Tests will:
- Run on APP_ID 16792 (moderation enabled)
- Skip on other APP_IDs (moderation not enabled)

* docs: explain why moderation tests are conditional

Add comment explaining that APP_ID 6743 (default test app) can't have
moderation enabled as it would break other existing tests. This is why
we conditionally run moderation tests only on APP_ID 16792.

* docs: simplify moderation test comment

Remove internal implementation details and keep it professional.
Just state that these tests require moderation features.

* docs: clarify why moderation tests are conditional

Explain that APP_ID 16792 has moderation enabled, while other test
apps (e.g., StreamAPI CI) have it disabled, hence the conditional skip.

Author: itsmeadi

test/integration/cloud/user_flag.js

@@ -1,13 +1,20 @@
 import expect from 'expect.js';
 
 import { CloudContext } from './utils';
+import config from '../utils/config';
+
+// User flagging requires moderation features to be enabled on the Stream account.
+// APP_ID 16792 has moderation enabled. Other test apps (e.g., from StreamAPI CI)
+// have moderation disabled, so we skip these tests there.
+const shouldRunModerationTests = config.APP_ID === '16792';
+const describeOrSkip = shouldRunModerationTests ? describe : describe.skip;
 
 describe('User Flagging', () => {
   const ctx = new CloudContext();
 
   ctx.createUsers();
 
-  describe('When creating activities to establish users in moderation system', () => {
+  describeOrSkip('When creating activities to establish users in moderation system', () => {
     ctx.requestShouldNotError(async () => {
       // Create activities with users as actors to establish them in the moderation system
       // Using user1 and user2 which are commonly used across integration tests
@@ -26,7 +33,7 @@ describe('User Flagging', () => {
     });
   });
 
-  describe('When flagging a user with client.flagUser()', () => {
+  describeOrSkip('When flagging a user with client.flagUser()', () => {
     ctx.requestShouldNotError(async () => {
       // Flag user1 (which exists in the moderation system from other tests)
       ctx.response = await ctx.serverSideClient.flagUser('user1', {
@@ -37,7 +44,7 @@ describe('User Flagging', () => {
     });
   });
 
-  describe('When flagging using user.flag()', () => {
+  describeOrSkip('When flagging using user.flag()', () => {
     ctx.requestShouldNotError(async () => {
       // Flag using the user object method
       ctx.response = await ctx.serverSideClient.user('user1').flag({