[Claude PR] Add skip_email option to user creation endpoint (#5824)

* feat: add skip_email option to user creation endpoint

- Added optional skip_email field to NewUser struct in users.rs
- Added send_email_if_possible_with_skip function in users_ee.rs
- Updated user creation flow to support conditionally skipping email notifications
- Addresses issue #5823 requested by @alpetric

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: rubenfiszel <rubenfiszel@users.noreply.github.com>

* feat: add skip_email parameter to user creation endpoint OpenAPI spec

Add optional skip_email boolean parameter to the /users/create endpoint
schema to match the backend implementation that was added for skipping
email notifications during user creation.

Co-authored-by: alpetric <alpetric@users.noreply.github.com>

* revert users_ee

* ee repo ref

---------

Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>
Co-authored-by: rubenfiszel <rubenfiszel@users.noreply.github.com>
Co-authored-by: alpetric <alpetric@users.noreply.github.com>
Co-authored-by: Alex Petric <petric.al@gmail.com>

backend/ee-repo-ref.txt

@@ -1 +1 @@
-32039f675060b5996951708368bdefe14278d5cd
+4e43a2569abd9b80c8fdf98b75aeca7ba52d2caa

backend/windmill-api/openapi.yaml

@@ -377,6 +377,9 @@ paths:
                   type: string
                 company:
                   type: string
+                skip_email:
+                  type: boolean
+                  description: Skip sending email notifications to the user
               required:
                 - email
                 - password

backend/windmill-api/src/users.rs

@@ -334,6 +334,7 @@ pub struct NewUser {
     pub super_admin: bool,
     pub name: Option<String>,
     pub company: Option<String>,
+    pub skip_email: Option<bool>,
 }
 
 #[derive(Deserialize)]