fix(thresholds): add observed threshold for attribute 188 with value 0

Adds an observed threshold entry for ATA attribute 188 (Command_Timeout)
when the value is exactly 0. This fixes incorrect failure rate calculations
for drives with zero command timeouts, particularly affecting Seagate drives.

Author: Starosdev

webapp/backend/pkg/thresholds/ata_attribute_metadata.go

@@ -692,6 +692,12 @@ var AtaMetadata = map[int]AtaAttributeMetadata{
 			return rawValue
 		},
 		ObservedThresholds: []ObservedThreshold{
+			{
+				Low:               0,
+				High:              0,
+				AnnualFailureRate: 0.024893587674442153,
+				ErrorInterval:     []float64{0.020857343769186413, 0.0294830350167543},
+			},
 			{
 				Low: 0,
 				// This is set arbitrarily to avoid notifications caused by low