NonSdkApiUsedViolation ECParameterSpec.getCurveName

Running on Android 11 emulator with conscrypt `2.5.1`:

```
StrictMode policy violation: android.os.strictmode.NonSdkApiUsedViolation: Ljava/security/spec/ECParameterSpec;->getCurveName()Ljava/lang/String;
at android.os.StrictMode.lambda$static$1(StrictMode.java:416)
at android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ.accept(Unknown Source:2)
at java.lang.Class.getDeclaredMethodInternal(Native Method)
at java.lang.Class.getMethod(Class.java:2067)
at java.lang.Class.getDeclaredMethod(Class.java:2050)
at org.conscrypt.Platform.(Platform.java:72)
at org.conscrypt.Platform.getDefaultProviderName(Platform.java:87)
at org.conscrypt.OpenSSLProvider.(OpenSSLProvider.java:47)
at org.conscrypt.Conscrypt.newProvider(Conscrypt.java:134)
```