fix(google-calendar): validate grantee before building share ACL body

Throw a clear error when scopeType is user/group/domain but scopeValue is
missing or blank, instead of POSTing a scope-type-only body that the Calendar
ACL API rejects with an opaque error.

Author: waleedlatif1

apps/sim/tools/google_calendar/share_calendar.ts

@@ -8,8 +8,14 @@ import type { ToolConfig } from '@/tools/types'
 
 const buildAclBody = (params: GoogleCalendarShareCalendarParams) => {
   const scope: { type: string; value?: string } = { type: params.scopeType }
-  if (params.scopeType !== 'default' && params.scopeValue) {
-    scope.value = params.scopeValue.trim()
+  if (params.scopeType !== 'default') {
+    const value = params.scopeValue?.trim()
+    if (!value) {
+      throw new Error(
+        `A grantee is required when scope type is "${params.scopeType}". Provide an email (user/group) or domain name in scopeValue.`
+      )
+    }
+    scope.value = value
   }
   return { role: params.role, scope }
 }