Query Option Scan Wait not set for sub-second times against CNG

Setting a small sub second scan wait time results in no scan wait time being sent as a query option:

E.g. this test https://github.com/couchbaselabs/transactions-fit-performer/blob/ed7d034b0e21f89253bf8653253e4589a6b721cc/test-driver/src/test/java/com/couchbase/client/query/QueryOptionTest.java#L154

Results in query options:

read_only: true

tuning_options {

  max_parallelism: 3

  pipeline_batch: 1

  pipeline_cap: 1

  scan_wait {

  }

  scan_cap: 10

}

client_context_id: "123"

scan_consistency: SCAN_CONSISTENCY_REQUEST_PLUS

flex_index: true

preserve_expiry: true

profile_mode: PROFILE_MODE_TIMINGS 

When scan_wait should be nanos: 50000000

Looking a the code, converting from nanos to seconds is causing small values to be set as 0.