fix(archiver): zero-seed l1_mismatch prune_type counter

l1_mismatch was added to recordPrune and emitted from the l1 synchronizer, but omitted from the prune_count default-values list, so the prune_count{prune_type="l1_mismatch"} series only appeared after the first such prune instead of from startup like the other causes. Add it to the zero-seed list and to the PRUNE_TYPE attribute doc comment.

Author: PhilWindle

yarn-project/archiver/src/modules/instrumentation.ts

@@ -85,7 +85,7 @@ export class ArchiverInstrumentation {
     this.pruneDuration = meter.createHistogram(Metrics.ARCHIVER_PRUNE_DURATION);
 
     this.pruneCount = createUpDownCounterWithDefault(meter, Metrics.ARCHIVER_PRUNE_COUNT, {
-      [Attributes.PRUNE_TYPE]: ['unproven', 'uncheckpointed', 'l1_conflict', 'orphan'],
+      [Attributes.PRUNE_TYPE]: ['unproven', 'uncheckpointed', 'l1_conflict', 'orphan', 'l1_mismatch'],
     });
 
     this.blockProposalTxTargetCount = createUpDownCounterWithDefault(

yarn-project/telemetry-client/src/attributes.ts

@@ -73,7 +73,7 @@ export const OK = 'aztec.ok';
 export const STATUS = 'aztec.status';
 /** Generic error type attribute */
 export const ERROR_TYPE = 'aztec.error_type';
-/** The cause of an archiver prune (unproven / uncheckpointed / l1_conflict / orphan) */
+/** The cause of an archiver prune (unproven / uncheckpointed / l1_conflict / orphan / l1_mismatch) */
 export const PRUNE_TYPE = 'aztec.archiver.prune_type';
 /** The type of the transaction */
 export const L1_TX_TYPE = 'aztec.l1.tx_type';