fix chat section not updating

lib/Onyx.ts

@@ -238,6 +238,11 @@ function multiSet(data: OnyxMultiSetInput): Promise<void> {
 
     const updatePromises = keyValuePairsToSet.map(([key, value]) => {
         const prevValue = cache.get(key, false);
+        // When we use multiSet to set a key we want to clear the current delta changes from Onyx.merge that were queued
+        // before the value was set. If Onyx.merge is currently reading the old value from storage, it will then not apply the changes.
+        if (OnyxUtils.hasPendingMergeForKey(key)) {
+            delete OnyxUtils.getMergeQueue()[key];
+        }
 
         // Update cache and optimistically inform subscribers on the next tick
         cache.set(key, value);

tests/unit/onyxTest.ts

@@ -2029,5 +2029,25 @@ describe('Onyx', () => {
                 [`${ONYX_KEYS.COLLECTION.TEST_KEY}entry2`]: {id: 'entry2_id', name: 'entry2_name'},
             });
         });
+        it('should clear pending merge for a key during multiSet()', async () => {
+            const testKey = `${ONYX_KEYS.COLLECTION.TEST_KEY}entry1`;
+
+            // Mock the merge queue with the correct type
+            const mockMergeQueue: Record<string, unknown[]> = {
+                [testKey]: [{some: 'mergeData'}],
+            };
+
+            // Mock the utility functions
+            jest.spyOn(OnyxUtils, 'hasPendingMergeForKey').mockImplementation((key) => key === testKey);
+            jest.spyOn(OnyxUtils, 'getMergeQueue').mockImplementation(() => mockMergeQueue);
+
+            await Onyx.multiSet({
+                [testKey]: {id: 'entry1_id', name: 'entry1_name'},
+            });
+
+            expect(mockMergeQueue[testKey]).toBeUndefined();
+
+            jest.restoreAllMocks();
+        });
     });
 });