fix: [PromptEditorHeightResizeWrap] Bug #12410 (#12406)

web/app/components/app/configuration/config-prompt/prompt-editor-height-resize-wrap.tsx

   const [clientY, setClientY] = useState(0)
   const [isResizing, setIsResizing] = useState(false)
   const [prevUserSelectStyle, setPrevUserSelectStyle] = useState(getComputedStyle(document.body).userSelect)
+  const [oldHeight, setOldHeight] = useState(height)
 
   const handleStartResize = useCallback((e: React.MouseEvent<HTMLElement>) => {
     setClientY(e.clientY)
     setIsResizing(true)
+    setOldHeight(height)
     setPrevUserSelectStyle(getComputedStyle(document.body).userSelect)
     document.body.style.userSelect = 'none'
-  }, [])
+  }, [height])
 
   const handleStopResize = useCallback(() => {
     setIsResizing(false)
       return
 
     const offset = e.clientY - clientY
-    let newHeight = height + offset
-    setClientY(e.clientY)
+    let newHeight = oldHeight + offset
     if (newHeight < minHeight)
       newHeight = minHeight
     onHeightChange(newHeight)