Replaced locally defined feature flag attribute constants in the telemetry package with references to OpenTelemetry semantic conventions (semconv).

Reduces maintenance and ensures alignment with OTel updates.
Removes redundant constant definitions.

Signed-off-by: Abishek Kafle <[email protected]>

Author: abisecops

openfeature/telemetry/telemetry.go

@@ -3,9 +3,8 @@ package telemetry
 
 import (
 	"strings"
-
 	"github.com/open-feature/go-sdk/openfeature"
-	semconv "go.opentelemetry.io/otel/semconv/v1.34.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.25.0"
 )
 
 // EvaluationEvent represents an event that is emitted when a flag is evaluated.
@@ -26,16 +25,16 @@ type EvaluationEvent struct {
 
 // Use OTel semconv constants for feature flag attributes.
 const (
-    FlagKey          = semconv.FeatureFlagKeyKey
-    ErrorTypeKey     = semconv.ErrorTypeKey
-    ResultValueKey   = semconv.FeatureFlagResultValueKey
-    ResultVariantKey = semconv.FeatureFlagResultVariantKey
-    ErrorMessageKey  = semconv.ErrorMessageKey
-    ContextIDKey     = semconv.FeatureFlagContextIDKey
-    ProviderNameKey  = semconv.FeatureFlagProviderNameKey
-    ResultReasonKey  = semconv.FeatureFlagResultReasonKey
-    FlagSetIDKey     = semconv.FeatureFlagSetIDKey
-    VersionKey       = semconv.FeatureFlagVersionKey
+	FlagKey          = semconv.FeatureFlagKeyKey
+	ErrorTypeKey     = semconv.ErrorTypeKey
+	ResultValueKey   = semconv.FeatureFlagResultValueKey
+	ResultVariantKey = semconv.FeatureFlagResultVariantKey
+	ErrorMessageKey  = semconv.ErrorMessageKey
+	ContextIDKey     = semconv.FeatureFlagContextIDKey
+	ProviderNameKey  = semconv.FeatureFlagProviderNameKey
+	ResultReasonKey  = semconv.FeatureFlagResultReasonKey
+	FlagSetIDKey     = semconv.FeatureFlagSetIDKey
+	VersionKey       = semconv.FeatureFlagVersionKey
 )
 
 // FlagEvaluationKey is the name of the feature flag evaluation event.