Fix the TypeError in dataset Share Access. (#3309)

### Purpose:
Currently, when entering someone else's email in the dataset Share
Access, the console displays an error: TypeError: Cannot read properties
of undefined. The reason is that the dataset does not have the allOwners
property, causing it to remain undefined.

### Changes:
Added a new backend API for datasets to retrieve the owners' emails of
datasets that the current user can access. The frontend passes the
returned values into the Share Access component.

### Demo:
before:

![image](https://github.com/user-attachments/assets/3440f902-7137-4e15-a240-991f06f40496)

after:

![image](https://github.com/user-attachments/assets/0a7067e7-ed94-4a29-81ac-12b4aa63f079)

Author: GspikeHalo

core/file-service/src/main/scala/edu/uci/ics/texera/service/resource/DatasetResource.scala

@@ -49,6 +49,7 @@ import jakarta.ws.rs._
 import jakarta.ws.rs.core.{MediaType, Response, StreamingOutput}
 import org.jooq.{DSLContext, EnumType}
 
+import java.util
 import java.io.{InputStream, OutputStream}
 import java.net.URLDecoder
 import java.nio.charset.StandardCharsets
@@ -1033,6 +1034,26 @@ class DatasetResource {
     records.getValues(DATASET_USER_ACCESS.UID)
   }
 
+  /**
+    * This method returns all owner user names of the dataset that the user has access to
+    *
+    * @return OwnerName[]
+    */
+  @GET
+  @RolesAllowed(Array("REGULAR", "ADMIN"))
+  @Path("/user-dataset-owners")
+  def retrieveOwners(@Auth user: SessionUser): util.List[String] = {
+    context
+      .selectDistinct(USER.EMAIL)
+      .from(USER)
+      .join(DATASET)
+      .on(DATASET.OWNER_UID.eq(USER.UID))
+      .join(DATASET_USER_ACCESS)
+      .on(DATASET_USER_ACCESS.DID.eq(DATASET.DID))
+      .where(DATASET_USER_ACCESS.UID.eq(user.getUid))
+      .fetchInto(classOf[String])
+  }
+
   private def fetchDatasetVersions(ctx: DSLContext, did: Integer): List[DatasetVersion] = {
     ctx
       .selectFrom(DATASET_VERSION)

core/gui/src/app/dashboard/component/user/list-item/list-item.component.ts

@@ -201,6 +201,7 @@ export class ListItemComponent implements OnInit, OnChanges {
           writeAccess: this.entry.accessLevel === "WRITE",
           type: "dataset",
           id: this.entry.id,
+          allOwners: await firstValueFrom(this.datasetService.retrieveOwners()),
         },
         nzFooter: null,
         nzTitle: "Share this dataset with others",

core/gui/src/app/dashboard/service/user/dataset/dataset.service.ts

@@ -377,4 +377,8 @@ export class DatasetService {
   public getDatasetOwners(did: number): Observable<number[]> {
     return this.http.get<number[]>(`${AppSettings.getApiEndpoint()}/${DATASET_GET_OWNERS_URL}?did=${did}`);
   }
+
+  public retrieveOwners(): Observable<string[]> {
+    return this.http.get<string[]>(`${AppSettings.getApiEndpoint()}/${DATASET_GET_OWNERS_URL}`);
+  }
 }