fix(gc): clean up tracking entities after operation completes (backport #1709)

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---

Fixes: #1708

Description of the change:

Ensures that the GarbageCollection entity is deleted after a gc request completes. This entity is only intended to track gc invocations for the audit log - the entity doesn't encode any information or even carry any specific metadata than the universal audit log metadata (timestamp, link to target ID, name of requesting client/user). Prior to this change both the primary GarbageCollection table and its GarbageCollection_AUD audit log would gain/retain a new row each time a GC request was serviced. The primary table should generally be empty in this case and only the audit log should retain a historical log.
This also adds an event listener to catch target loss and ensure that no dangling ThreadDump, HeapDump, or AsyncProfilerRecording tracking entities are left behind. These already do normally have a deletion in their lifecycle, but if the associated target is unexpectedly lost while an operation is underway then the tracking entities could be left behind stale forever.

---

This is an automatic backport of pull request #1709 done by [Mergify](https://mergify.com).

[andrewazores]

/build_test

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Workflow started at 7/27/2026, 3:05:36 PM. View Actions Run.

[github-actions]

No OpenAPI schema changes detected.

GraphQL schema change detected:

diff --git a/schema/schema.graphql b/schema/schema.graphql
index 663e793..d1d9731 100644
--- a/schema/schema.graphql
+++ b/schema/schema.graphql
@@ -374,20 +374,22 @@ input ArchivedRecordingsFilterInput {
   archivedTimeBeforeEqual: BigInteger
   labels: [String]
   name: String
   names: [String]
   sizeBytesGreaterThanEqual: BigInteger
   sizeBytesLessThanEqual: BigInteger
   sourceTarget: String
 }
 
 input DiscoveryNodeFilterInput {
+  alias: String
+  aliases: [String]
   annotations: [String]
   id: BigInteger
   ids: [BigInteger]
   jvmId: String
   jvmIds: [String]
   labels: [String]
   name: String
   names: [String]
   nodeTypes: [String]
   targetId: BigInteger

No WebSocket notifications schema changes detected.

[andrewazores]

/build_test

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Workflow started at 7/27/2026, 3:20:31 PM. View Actions Run.

[github-actions]

No OpenAPI schema changes detected.

No GraphQL schema changes detected.

No WebSocket notifications schema changes detected.

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