[chore] Fix BenchmarkProfilesUsage (#14215)

#### Description

The `Duration` and `SetDuration` methods were deprecated in #14188, and
their implementations are now no-ops, causing [a benchmark to
fail](https://github.com/open-telemetry/opentelemetry-collector/actions/runs/19668308741/job/56330560134).
I updated the benchmark to use `DurationNano` and `SetDurationNano`
instead.

Author: jade-guiton-dd

pdata/pprofile/profiles_test.go

@@ -171,6 +171,7 @@ func TestProfilesSwitchDictionary(t *testing.T) {
 func BenchmarkProfilesUsage(b *testing.B) {
 	pd := generateTestProfiles()
 	ts := pcommon.NewTimestampFromTime(time.Now())
+	dur := uint64(1_000_000_000)
 	testValProfileID := ProfileID([16]byte{1, 2, 3, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 2, 1})
 	testSecondValProfileID := ProfileID([16]byte{2, 2, 3, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 2, 1})
 
@@ -197,13 +198,13 @@ func BenchmarkProfilesUsage(b *testing.B) {
 					assert.Equal(b, testValProfileID, s.ProfileID())
 					s.SetTime(ts)
 					assert.Equal(b, ts, s.Time())
-					s.SetDuration(ts)
-					assert.Equal(b, ts, s.Duration())
+					s.SetDurationNano(dur)
+					assert.Equal(b, dur, s.DurationNano())
 				}
 				s := iss.Profiles().AppendEmpty()
 				s.SetProfileID(testSecondValProfileID)
 				s.SetTime(ts)
-				s.SetDuration(ts)
+				s.SetDurationNano(dur)
 				s.AttributeIndices().Append(1)
 				iss.Profiles().RemoveIf(func(lr Profile) bool {
 					return lr.ProfileID() == testSecondValProfileID