🎨 style: Address Minor UI Refresh Issues (#6552)

* 🎨 style: Adjust isSelected svg layout of ModelSpecItem

* style: fix modelSpec URL image beeing off-center; style: selected svg centered vertically

* style: Update CustomMenu component to use rounded-lg and enhance focus styles

* style: SidePanel top padding same as NewChat

* fix: prevent unnecessary space rendering in SplitText component

* style: Fix class names and enhance layout in Badge components

* feat: disable temporary chat when in chat

* style: handle > 1 lines in title Landing

* feat: enhance dynamic margin calculation based on line count and content height in Landing component

client/src/components/Chat/Input/ChatForm.tsx

@@ -278,7 +278,12 @@ const ChatForm = memo(({ index = 0 }: { index?: number }) => {
               <div className={`${isRTL ? 'mr-2' : 'ml-2'}`}>
                 <AttachFileChat disableInputs={disableInputs} />
               </div>
-              <BadgeRow onChange={(newBadges) => setBadges(newBadges)} />
+              <BadgeRow
+                onChange={(newBadges) => setBadges(newBadges)}
+                isInChat={
+                  Array.isArray(conversation?.messages) && conversation.messages.length >= 1
+                }
+              />
               <div className="mx-auto flex" />
               {SpeechToText && (
                 <AudioRecorder