[chore] fix exhaustive lint for pkg pdatatest (#23953)

**Description:** 
related #23266

Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>

.golangci.yml

@@ -290,9 +290,6 @@ issues:
     - path: k8sconfig
       linters:
         - exhaustive
-    - path: pdatatest
-      linters:
-        - exhaustive
     - path: ottl
       linters:
         - exhaustive

pkg/pdatatest/pmetrictest/metrics.go

@@ -272,6 +272,7 @@ func CompareMetric(expected pmetric.Metric, actual pmetric.Metric) error {
 	case pmetric.MetricTypeSummary:
 		errs = multierr.Append(errs, compareSummaryDataPointSlices(expected.Summary().DataPoints(),
 			actual.Summary().DataPoints()))
+	case pmetric.MetricTypeEmpty:
 	}
 
 	return errs

pkg/pdatatest/pmetrictest/options.go

@@ -64,6 +64,8 @@ func getDataPointSlice(metric pmetric.Metric) pmetric.NumberDataPointSlice {
 		dataPointSlice = metric.Gauge().DataPoints()
 	case pmetric.MetricTypeSum:
 		dataPointSlice = metric.Sum().DataPoints()
+	case pmetric.MetricTypeEmpty, pmetric.MetricTypeHistogram, pmetric.MetricTypeExponentialHistogram, pmetric.MetricTypeSummary:
+		fallthrough
 	default:
 		panic(fmt.Sprintf("data type not supported: %s", metric.Type()))
 	}
@@ -115,6 +117,7 @@ func maskTimestamp(metrics pmetric.Metrics, ts pcommon.Timestamp) {
 					for l := 0; l < m.Summary().DataPoints().Len(); l++ {
 						m.Summary().DataPoints().At(l).SetTimestamp(ts)
 					}
+				case pmetric.MetricTypeEmpty:
 				}
 			}
 		}
@@ -157,6 +160,7 @@ func maskStartTimestamp(metrics pmetric.Metrics, ts pcommon.Timestamp) {
 					for l := 0; l < m.Summary().DataPoints().Len(); l++ {
 						m.Summary().DataPoints().At(l).SetStartTimestamp(ts)
 					}
+				case pmetric.MetricTypeEmpty:
 				}
 			}
 		}
@@ -226,6 +230,8 @@ func maskDataPointSliceAttributeValues(dataPoints pmetric.NumberDataPointSlice,
 				attribute.SetBool(false)
 			case pcommon.ValueTypeInt:
 				attribute.SetInt(0)
+			case pcommon.ValueTypeEmpty, pcommon.ValueTypeDouble, pcommon.ValueTypeMap, pcommon.ValueTypeSlice, pcommon.ValueTypeBytes:
+				fallthrough
 			default:
 				panic(fmt.Sprintf("data type not supported: %s", attribute.Type()))
 			}
@@ -397,6 +403,7 @@ func sortMetricDataPointSlices(ms pmetric.Metrics) {
 					sortExponentialHistogramDataPointSlice(m.ExponentialHistogram().DataPoints())
 				case pmetric.MetricTypeSummary:
 					sortSummaryDataPointSlice(m.Summary().DataPoints())
+				case pmetric.MetricTypeEmpty:
 				}
 			}
 		}