Features: Memory page rendering and other bug fixes (#11784)

### What problem does this PR solve?

Features: Memory page rendering and other bug fixes
- Rendering of the Memory list page
- Rendering of the message list page in Memory
- Fixed an issue where the empty state was incorrectly displayed when
search criteria were applied
- Added a web link for the API-Key
- modifying the index_mode attribute of the Confluence data source.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/next-chats/index.tsx

@@ -50,18 +50,19 @@ export default function ChatList() {
 
   return (
     <section className="flex flex-col w-full flex-1">
-      {data.dialogs?.length <= 0 && (
+      {data.dialogs?.length <= 0 && !searchString && (
         <div className="flex w-full items-center justify-center h-[calc(100vh-164px)]">
           <EmptyAppCard
             showIcon
             size="large"
             className="w-[480px] p-14"
+            isSearch={!!searchString}
             type={EmptyCardType.Chat}
             onClick={() => handleShowCreateModal()}
           />
         </div>
       )}
-      {data.dialogs?.length > 0 && (
+      {(data.dialogs?.length > 0 || searchString) && (
         <>
           <div className="px-8 pt-8">
             <ListFilterBar
@@ -76,6 +77,18 @@ export default function ChatList() {
               </Button>
             </ListFilterBar>
           </div>
+          {data.dialogs?.length <= 0 && searchString && (
+            <div className="flex w-full items-center justify-center h-[calc(100vh-164px)]">
+              <EmptyAppCard
+                showIcon
+                size="large"
+                className="w-[480px] p-14"
+                isSearch={!!searchString}
+                type={EmptyCardType.Chat}
+                onClick={() => handleShowCreateModal()}
+              />
+            </div>
+          )}
           <div className="flex-1 overflow-auto">
             <CardContainer className="max-h-[calc(100dvh-280px)] overflow-auto px-8">
               {data.dialogs.map((x) => {