make `lines_shown` more directive (#2548)

resolves #2546

Co-authored-by: Fred Lefévère-Laoide <Fred.Lefevere-Laoide@Taipy.io>

frontend/taipy-gui/src/components/Taipy/Input.tsx

@@ -375,6 +375,7 @@ const Input = (props: TaipyInputProps) => {
                     onKeyDown={handleAction}
                     multiline={multiline}
                     minRows={linesShown}
+                    maxRows={linesShown}
                     size={size}
                 />
                 {props.children}