fix(tests): remove cy.pause() from tooltip test, add missing fixture

- Remove 3 cy.pause() debug calls from the tooltip boundary test
  (02.reg_ui_tooltip_boundary_times) that block automated runs.
  The @xfail tag is already excluded by CI test commands (--@xfail).

- Add missing silenced-and-firing-mixed-severity fixture referenced
  by 02.incidents-mocking-example.cy.ts.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Claude Agent

web/cypress/e2e/incidents/regression/02.reg_ui_tooltip_boundary_times.cy.ts

@@ -113,7 +113,6 @@ describe(
       incidentsPage.setDays('1 day');
       incidentsPage.elements.incidentsChartContainer().should('be.visible');
       incidentsPage.elements.incidentsChartBarsGroups().should('have.length', 1);
-      cy.pause();
 
       cy.log(
         '2.2 Consecutive interval boundaries: End of segment 1 should equal Start of segment 2',
@@ -141,7 +140,6 @@ describe(
               ).to.equal(firstEnd);
             });
         });
-      cy.pause();
 
       cy.log('2.3 Incident tooltip Start vs alert tooltip Start vs alerts table Start');
       incidentsPage.hoverOverIncidentBarSegment(0, 0);
@@ -188,7 +186,6 @@ describe(
               });
           });
         });
-      cy.pause();
 
       cy.log('Expected failure: Incident tooltip Start times are 5 minutes off (OU-1221)');
     });

web/cypress/fixtures/incident-scenarios/silenced-and-firing-mixed-severity.yaml

@@ -0,0 +1,32 @@
+name: "Silenced and Firing Mixed Severity"
+description: "One silenced critical incident (resolved) and one firing warning incident."
+incidents:
+  - id: "silenced-critical-resolved-001"
+    component: "monitoring"
+    layer: "core"
+    timeline:
+      start: "4h"
+      end: "1h"
+    alerts:
+      - name: "SilencedCriticalAlert001"
+        namespace: "openshift-monitoring"
+        severity: "critical"
+        firing: false
+        silenced: true
+        timeline:
+          start: "3h"
+          end: "2h"
+
+  - id: "firing-warning-unsilenced-001"
+    component: "network"
+    layer: "core"
+    timeline:
+      start: "2h"
+    alerts:
+      - name: "FiringWarningAlert001"
+        namespace: "openshift-network"
+        severity: "warning"
+        firing: true
+        silenced: false
+        timeline:
+          start: "1h"