fix(cli): require hostname (#5328)

restores go cli parity for `supabase domains create` by requiring
`--custom-hostname` in the ts
 legacy shim instead of only failing later in go

Author: 7ttp

apps/cli/src/legacy/commands/domains/create/create.command.ts

@@ -9,7 +9,6 @@ const config = {
   ),
   customHostname: Flag.string("custom-hostname").pipe(
     Flag.withDescription("The custom hostname to use for your Supabase project."),
-    Flag.optional,
   ),
 } as const;
 

apps/cli/src/legacy/commands/domains/create/create.handler.ts

@@ -8,7 +8,6 @@ export const legacyDomainsCreate = Effect.fn("legacy.domains.create")(function*
   const proxy = yield* LegacyGoProxy;
   const args: string[] = ["domains", "create"];
   if (Option.isSome(flags.projectRef)) args.push("--project-ref", flags.projectRef.value);
-  if (Option.isSome(flags.customHostname))
-    args.push("--custom-hostname", flags.customHostname.value);
+  args.push("--custom-hostname", flags.customHostname);
   yield* proxy.exec(args);
 });