pub fn normalize_value(value: &mut Value)Expand description
Applies Firestore’s write-time normalization in place.
Timestamps keep microsecond precision: the official emulator stores
1970-01-01T00:00:00.000000999Z as the epoch and …00.000001500Z as one microsecond, so
sub-microsecond digits are truncated, not rounded (tests/fixtures/value_order.json).