Fix: Model provider add verify and fixed form in modal not resetting issue (#15520)

### What problem does this PR solve?

Fix: Model provider add verify and fixed form in modal not resetting
issue

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/utils/api.ts

@@ -30,6 +30,8 @@ export default {
   addProvider: `${restAPIv1}/providers/`,
   addProviderInstance: ({ llm_factory }: { llm_factory: string }) =>
     `${restAPIv1}/providers/${llm_factory}/instances`,
+  verifyProviderConnection: ({ provider_name }: { provider_name: string }) =>
+    `${restAPIv1}/providers/${provider_name}/connection`,
   listProviderInstances: ({ provider_name }: { provider_name: string }) =>
     `${restAPIv1}/providers/${provider_name}/instances`,
   listInstanceModels: ({