feat(iot-hub): surface EntitiesLimitExceededException to caller

Re-throw EntitiesLimitExceededException from IoT Hub item install and
solution-template install paths instead of folding it into the generic
install error response, so the PE entity-limit error reaches the global
HTTP error handler.

In the device install wizard switch saveDevice/createDevice (and
overwrite) calls from ignoreErrors:true to false so the limit-exceeded
toast is shown when the backend rejects the create.

application/src/main/java/org/thingsboard/server/service/iot_hub/DefaultIotHubService.java

@@ -40,6 +40,7 @@ import org.thingsboard.server.common.data.iot_hub.IotHubInstalledItemDescriptor;
 import org.thingsboard.server.common.data.iot_hub.RuleChainInstalledItemDescriptor;
 import org.thingsboard.server.common.data.iot_hub.SolutionTemplateInstalledItemDescriptor;
 import org.thingsboard.server.common.data.iot_hub.WidgetInstalledItemDescriptor;
+import org.thingsboard.server.exception.EntitiesLimitExceededException;
 import org.thingsboard.server.service.solutions.SolutionService;
 import org.thingsboard.server.service.solutions.data.solution.SolutionInstallResponse;
 import org.thingsboard.server.common.data.rule.RuleChain;
@@ -135,6 +136,9 @@ public class DefaultIotHubService implements IotHubService {
             return InstallItemVersionResult.success(descriptor);
         } catch (Exception e) {
             log.error("[{}] Failed to install IoT Hub item version: {}", tenantId, versionId, e);
+            if (e instanceof EntitiesLimitExceededException el) {
+                throw el;
+            }
             return InstallItemVersionResult.error(e.getMessage());
         }
     }

application/src/main/java/org/thingsboard/server/service/solutions/DefaultSolutionService.java

@@ -93,6 +93,7 @@ import org.thingsboard.server.dao.edge.EdgeService;
 import org.thingsboard.server.dao.timeseries.TimeseriesService;
 import org.thingsboard.server.dao.user.UserService;
 import org.thingsboard.server.dao.rule.RuleChainService;
+import org.thingsboard.server.exception.EntitiesLimitExceededException;
 import org.thingsboard.server.queue.discovery.PartitionService;
 import org.thingsboard.server.queue.discovery.TbServiceInfoProvider;
 import org.thingsboard.server.queue.provider.TbQueueProducerProvider;
@@ -409,6 +410,9 @@ public class DefaultSolutionService implements SolutionService {
         } catch (Throwable e) {
             log.error("[{}][{}] Failed to install solution template", tenantId, solutionId, e);
             rollback(tenantId, solutionId, ctx, e);
+            if (e instanceof EntitiesLimitExceededException el) {
+                throw el;
+            }
             return new SolutionInstallResponse(
                     new TenantSolutionTemplateInstructions(ctx.getSolutionInstructions()),
                     false,

ui-ngx/src/app/modules/home/components/iot-hub/device-install-dialog/device-install-dialog.component.ts

@@ -748,12 +748,12 @@ export class TbDeviceInstallDialogComponent extends DialogComponent<TbDeviceInst
         return { id: result.id.id, name: result.name, url: `/profiles/deviceProfiles/${result.id.id}` };
       }
       case InstallStepType.DEVICE: {
-        const result = await firstValueFrom(this.deviceService.saveDevice(template, {ignoreErrors: true}));
+        const result = await firstValueFrom(this.deviceService.saveDevice(template, {ignoreErrors: false}));
         const creds = await this.resolveCredentials(step, result.id.id);
         return { id: result.id.id, name: result.name, url: `/entities/devices/${result.id.id}`, token: creds.credentialsId };
       }
       case InstallStepType.GATEWAY: {
-        const result = await firstValueFrom(this.deviceService.saveDevice(template, {ignoreErrors: true}));
+        const result = await firstValueFrom(this.deviceService.saveDevice(template, {ignoreErrors: false}));
         const creds = await this.resolveCredentials(step, result.id.id);
         const output = {
           id: result.id.id,
@@ -904,13 +904,13 @@ export class TbDeviceInstallDialogComponent extends DialogComponent<TbDeviceInst
       }
       case InstallStepType.DEVICE: {
         template.id = { id: existing.id, entityType: 'DEVICE' };
-        const result = await firstValueFrom(this.deviceService.saveDevice(template, {ignoreErrors: true}));
+        const result = await firstValueFrom(this.deviceService.saveDevice(template, {ignoreErrors: false}));
         const creds = await this.resolveCredentials(step, result.id.id);
         return { id: result.id.id, name: result.name, url: `/entities/devices/${result.id.id}`, token: creds.credentialsId };
       }
       case InstallStepType.GATEWAY: {
         template.id = { id: existing.id, entityType: 'DEVICE' };
-        const result = await firstValueFrom(this.deviceService.saveDevice(template, {ignoreErrors: true}));
+        const result = await firstValueFrom(this.deviceService.saveDevice(template, {ignoreErrors: false}));
         const creds = await this.resolveCredentials(step, result.id.id);
         const output: EntityStepOutput = {
           id: result.id.id,