fix(telemetry): drop the remaining suppressed dimensions and diagram values

Alloy and the Grafana Cloud collector still declared a spanmetrics dimension
for an attribute tx.receive no longer sets, which only widens the label set.
The runbook's drop-path diagram still listed two tx_status values that no
longer exist, because the paths that set them now run before the span starts.

docker/telemetry/alloy/config.alloy

@@ -349,7 +349,6 @@ otelcol.connector.spanmetrics "xrpld" {
 
   // Overlay / peer dimensions.
   dimension { name = "local" }
-  dimension { name = "suppressed" }
   dimension { name = "proposal_trusted" }
   dimension { name = "validation_trusted" }
 

docker/telemetry/otel-collector-config.grafanacloud.yaml

@@ -223,7 +223,6 @@ connectors:
       - name: close_time_correct
       - name: consensus_state
       - name: local
-      - name: suppressed
       - name: proposal_trusted
       - name: validation_trusted
       - name: tx_type

docs/telemetry-runbook.md

@@ -588,7 +588,7 @@ flowchart TB
     RELAYOUT(["Overlay::relay fan-out to N peers<br/>(no span; if applied / terQUEUED,<br/>shouldRelay, not tfInnerBatchTxn)"]):::plain
     PREDROP(["Diverged / needNetworkLedger<br/>(no span — dropped before tx.receive)"]):::drop
     RCV["tx.receive<br/>(peer TMTransaction in)"]:::span
-    RCVDROP["tx.receive<br/>tx_status = rejected_inner_batch /<br/>suppressed / dropped_no_sync /<br/>dropped_queue_full"]:::drop
+    RCVDROP["tx.receive<br/>tx_status = dropped_no_sync /<br/>dropped_queue_full"]:::drop
     CHK(["checkTransaction<br/>(JtTransaction worker, no span)"]):::plain
     PRELAY_IN(["TMTransaction in (no span)"]):::plain