Allow setting Temporal's targetQueueSize to 0. (#7113)

* Allow setting targetQueueSize to 0.

0 is a valid setting, no need to require >= 1.

Signed-off-by: Rob Holland <rob@temporal.io>

* Revert accidental whitespace change.

Signed-off-by: Rob Holland <rob@temporal.io>

---------

Signed-off-by: Rob Holland <rob@temporal.io>

Author: robholland

CHANGELOG.md

@@ -110,6 +110,7 @@ To learn more about active deprecations, we recommend checking [GitHub Discussio
 - **Kafka Scaler**: Fix throwing error when using sasl=none ([#7061](https://github.com/kedacore/keda/issues/7061))
 - **Pulsar Scaler**: Resolve nil pointer dereference in Pulsar scaler redirect handling ([#7024](https://github.com/kedacore/keda/issues/7024))
 - **RabbitMQ Scaler**: Fix incorrect URL encoding in RabbitMQ vhosts containing %2f ([#6963](https://github.com/kedacore/keda/issues/6963))
+- **Temporal Scaler**: Allow setting 0 for targetQueueSize ([#7113](https://github.com/kedacore/keda/pull/7113))
 
 ### Deprecations
 

pkg/scalers/temporal_scaler.go

@@ -58,7 +58,7 @@ type temporalMetadata struct {
 }
 
 func (a *temporalMetadata) Validate() error {
-	if a.TargetQueueSize <= 0 {
+	if a.TargetQueueSize < 0 {
 		return fmt.Errorf("targetQueueSize must be a positive number")
 	}
 	if a.ActivationTargetQueueSize < 0 {