chore(coderd): remove the window option in open_in (#16104)

As we worked on adding a `open_in` parameter for workspace_apps - we
initially created three options :
- window
- slim_window
- tab

After further investigation, `window` should not be used and has to be
removed.

ℹ️ I decided to remove the option instead of deprecating it as we've not
created any release nor documented the feature. Can be discussed.

site/e2e/provisionerGenerated.ts

@@ -23,6 +23,7 @@ export enum AppSharingLevel {
 }
 
 export enum AppOpenIn {
+  /** @deprecated */
   WINDOW = 0,
   SLIM_WINDOW = 1,
   TAB = 2,

site/src/api/typesGenerated.ts

@@ -3018,13 +3018,9 @@ export const WorkspaceAppHealths: WorkspaceAppHealth[] = [
 ];
 
 // From codersdk/workspaceapps.go
-export type WorkspaceAppOpenIn = "slim-window" | "tab" | "window";
+export type WorkspaceAppOpenIn = "slim-window" | "tab";
 
-export const WorkspaceAppOpenIns: WorkspaceAppOpenIn[] = [
-	"slim-window",
-	"tab",
-	"window",
-];
+export const WorkspaceAppOpenIns: WorkspaceAppOpenIn[] = ["slim-window", "tab"];
 
 // From codersdk/workspaceapps.go
 export type WorkspaceAppSharingLevel = "authenticated" | "owner" | "public";