fix(ui): fix add node autoconnect (#5434)

## What type of PR is this? (check all applicable)

- [ ] Refactor
- [ ] Feature
- [x] Bug Fix
- [ ] Optimization
- [ ] Documentation Update
- [ ] Community Node Submission


## Description

The new select component appears to close itself before calling the
onchange handler. This short-circuits the autoconnect logic. Tweaked so
the ordering is correct.

## Related Tickets & Documents

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- Closes #5425

## QA Instructions, Screenshots, Recordings

bug should be fixed

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## Merge Plan

This PR can be merged when approved

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Author: blessedcoolant

invokeai/frontend/web/src/features/nodes/components/flow/AddNodePopover/AddNodePopover.tsx

@@ -155,8 +155,9 @@ const AddNodePopover = () => {
         return;
       }
       addNode(v.value);
+      dispatch(addNodePopoverClosed());
     },
-    [addNode]
+    [addNode, dispatch]
   );
 
   const onClose = useCallback(() => {
@@ -235,6 +236,7 @@ const AddNodePopover = () => {
             onMenuClose={onClose}
             onKeyDown={onKeyDown}
             inputRef={inputRef}
+            closeMenuOnSelect={false}
           />
         </InvPopoverBody>
       </InvPopoverContent>