Add context propagation checks to component lifecycle tests

- Introduced context_check_consumer.go to validate context handling during Consume* calls
- Updated component_test.go.tmpl to inject context into generated component tests
- Regenerated component test files across all sample components

Author: samuelarogbonlo

cmd/mdatagen/cmd/mdatagen/internal/testhelpers/context_check_consumer.go

@@ -0,0 +1,46 @@
+package testhelpers
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/collector/pdata/plog"
+	"go.opentelemetry.io/collector/pdata/pmetric"
+	"go.opentelemetry.io/collector/pdata/ptrace"
+)
+
+const (
+	TestKey   = "ctx-prop-key"
+	TestValue = "expected-value"
+)
+
+type ContextCheckLogsConsumer struct {
+	T *testing.T
+}
+
+func (c *ContextCheckLogsConsumer) ConsumeLogs(ctx context.Context, logs plog.Logs) error {
+	val := ctx.Value(TestKey)
+	require.Equal(c.T, TestValue, val)
+	return nil
+}
+
+type ContextCheckMetricsConsumer struct {
+	T *testing.T
+}
+
+func (c *ContextCheckMetricsConsumer) ConsumeMetrics(ctx context.Context, metrics pmetric.Metrics) error {
+	val := ctx.Value(TestKey)
+	require.Equal(c.T, TestValue, val)
+	return nil
+}
+
+type ContextCheckTracesConsumer struct {
+	T *testing.T
+}
+
+func (c *ContextCheckTracesConsumer) ConsumeTraces(ctx context.Context, traces ptrace.Traces) error {
+	val := ctx.Value(TestKey)
+	require.Equal(c.T, TestValue, val)
+	return nil
+}