fix: reset loading only on error

Author: Ayideyia

frontend/src/stores/kernelApi.ts

@@ -261,8 +261,9 @@ export const useKernelApiStore = defineStore('kernelApi', () => {
           stopOutputKeyword: CoreStopOutputKeyword,
         },
       )
-    } finally {
+    } catch (error) {
       loading.value = false
+      throw error
     }
   }