Fix index gateway startup if bloom gateway is enabled (#11543)

The index gateways discovers the bloom gateways by using the bloom
gateway ring.
In order to initialize the ring before the index gateway, it needs to be
added as dependency of the index gateway.

The dependency is conditional, because we don't want the ring to be
initialized even though the bloom gateway is not used.

**Special notes for your reviewer**:

This regression was introduced with
https://github.com/grafana/loki/pull/11537

Signed-off-by: Christian Haudum <christian.haudum@gmail.com>

pkg/loki/loki.go

@@ -693,6 +693,11 @@ func (t *Loki) setupModuleManager() error {
 		deps[QueryFrontend] = append(deps[QueryFrontend], QueryScheduler)
 	}
 
+	// Add bloom gateway ring in client mode to IndexGateway service dependencies if bloom filtering is enabled.
+	if t.Cfg.isModuleEnabled(IndexGateway) && t.Cfg.BloomGateway.Enabled {
+		deps[IndexGateway] = append(deps[IndexGateway], BloomGatewayRing)
+	}
+
 	//TODO(poyzannur) not sure this is needed for BloomCompactor
 	if t.Cfg.LegacyReadTarget {
 		deps[Read] = append(deps[Read], QueryScheduler, Ruler, Compactor, IndexGateway, BloomGateway, BloomCompactor)