StrictMode: fix non-SDK API usage detection.

The warning dedupe logic in the runtime meant that only the first usage of
each API was detected. Disable this logic when DETECT_VM_NON_SDK_API_USAGE
is enabled.

Test: m
Test: $ atest android.os.cts.StrictModeTest#testNonSdkApiUsage
Bug: 78268765
Change-Id: Iba1127b84180b9a5e5eb68abc4691ccad082b80e