fix: TS type mismatch in mutation onSubmit handlers

frontend/tsconfig.app.tsbuildinfo

@@ -0,0 +1 @@
+{"root":["./src/app.tsx","./src/main.tsx","./src/types.ts","./src/components/addmoneydialog.tsx","./src/components/piggybankcard.tsx","./src/components/piggybankform.tsx","./src/components/transactionhistory.tsx","./src/components/ui/button.tsx","./src/components/ui/dialog.tsx","./src/components/ui/input.tsx","./src/components/ui/progress.tsx","./src/components/ui/select.tsx","./src/lib/api.ts","./src/lib/utils.ts"],"version":"5.6.3"}