fix: invitations/accept with shortInvitiationUrl fails with wrong validation

apps/agent/README.md

-# OCM ENGINE - AGENT
+# OCM ENGINE - AGENT 
 
 Agent service is a wrapper around @ocm-engine/askar library. 
 

libs/askar/src/askar-rest/rest.controller.ts

@@ -44,9 +44,11 @@ export class RestController {
   async acceptInvitation(
     @Body() createInvitationDto: CreateInvitationResponseDto,
   ) {
-    return this.agentService.acceptInvitation(
-      createInvitationDto.invitationUrl,
-    );
+    const url =
+      createInvitationDto.invitationUrl ||
+      createInvitationDto.shortInvitationUrl;
+
+    return this.agentService.acceptInvitation(url);
   }
 
   @Get("/connections")

libs/dtos/src/dtos/responses/create.invitation.response.dto.ts

+import { IsString, ValidateIf } from "class-validator";
+
 export class CreateInvitationResponseDto {
   /**
    * Example of long invitation url
    * @example "http://0.0.0.0:8001?oob=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"
    */
+  @IsString()
+  @ValidateIf((o) => o.shortInvitationUrl === undefined)
   public invitationUrl: string;
 
   /**
    *
    * @example "http://0.0.0.0:8001/invitations/85a7c179-122b-4d2d-9a86-d92ad31cef2b"
    */
+  @IsString()
+  @ValidateIf((o) => o.invitationUrl === undefined)
   public shortInvitationUrl: string;
 }