feat: disable confirm btn if function info after use search is null (#6477)

Co-authored-by: r.sergeev <r.sergeev@yadro.com>

packages/sheets-formula-ui/src/views/more-functions/MoreFunctions.tsx

@@ -87,6 +87,7 @@ export function MoreFunctions() {
                 )}
                 {selectFunction && !!workbook && (
                     <Button
+                        disabled={!functionInfo}
                         variant="primary"
                         onClick={handleConfirm}
                         className="univer-mb-5 univer-ml-4 univer-mr-0 univer-mt-0"

packages/sheets-formula-ui/src/views/more-functions/select-function/SelectFunction.tsx

@@ -30,7 +30,7 @@ import { FunctionHelp } from '../function-help/FunctionHelp';
 import { FunctionParams } from '../function-params/FunctionParams';
 
 export interface ISelectFunctionProps {
-    onChange: (functionInfo: IFunctionInfo) => void;
+    onChange: (functionInfo: IFunctionInfo | null) => void;
 }
 
 export function SelectFunction(props: ISelectFunctionProps) {
@@ -102,6 +102,7 @@ export function SelectFunction(props: ISelectFunctionProps) {
     const setCurrentFunctionInfo = (selectedIndex: number) => {
         if (selectList.length === 0) {
             setFunctionInfo(null);
+            onChange(null);
             return;
         }
 
@@ -109,6 +110,7 @@ export function SelectFunction(props: ISelectFunctionProps) {
         const functionInfo = descriptionService.getFunctionInfo(selectList[selectedIndex].name);
         if (!functionInfo) {
             setFunctionInfo(null);
+            onChange(null);
             return;
         }