Added disabled trash button in http in workflows (#14439)

## Summary
Added a disabled Trash button in HTTP workflows to prevent accidental
deletion of certain items.

## Fixes
fixes #14420

## Screenshot

<img width="498" height="852" alt="Screenshot from 2025-09-12 05-37-37"
src="https://github.com/user-attachments/assets/dda8eded-a42b-4a86-bd6b-3d415e39fe3c"
/>

---


Open to review.

packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/http-request-action/components/KeyValuePairInput.tsx

@@ -174,7 +174,9 @@ export const KeyValuePairInput = ({
                 onClick={() => handleRemovePair(pair.id)}
                 Icon={IconTrash}
               />
-            ) : null}
+            ) : (
+              <Button Icon={IconTrash} disabled={true} />
+            )}
           </StyledKeyValueContainer>
         ))}
       </StyledContainer>