feat: gate issue-bound heartbeat run data

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/components/ActivityCharts.test.tsx

@@ -38,6 +38,7 @@ function createRun(overrides: Partial<HeartbeatRun> = {}): HeartbeatRun {
     id: "run-1",
     companyId: "company-1",
     agentId: "agent-1",
+    issueId: null,
     responsibleUserId: null,
     invocationSource: "on_demand",
     triggerDetail: "manual",