Adding `SECONDARY_READS` meta flag to the query does not affect the `readPreference`

Expected behavior:
When I add the SECONDARY_READS meta flag using the annotation @Meta(flags = { SECONDARY_READS }) or when .allowSecondaryReads() is invoked on a query, the read preference should be set as secondary or secondaryPreferred.

Actual behaviour:
When I add the SECONDARY_READS meta flag using the annotation @Meta(flags = { SECONDARY_READS }) or when .allowSecondaryReads() is invoked on a query, the read preference is instead set as primaryPreferred.

Is this the intended behavior?

• If it is, could you please explain why?
• If not, would you mind if I created a separate PR to correct it, as per the expected behavior outlined above?

Root cause:

• https://github.com/spring-projects/spring-data-mongodb/blob/d294d50407b435adbe2f9cffbbbdcd548801382f/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Query.java#L236C1-L249C3

The unit test to reproduce the potential bug discovered:

import com.mongodb.ReadPreference
import org.assertj.core.api.Assertions.assertThat
import org.junit.jupiter.api.Test
import org.springframework.data.mongodb.core.query.Criteria
import org.springframework.data.mongodb.core.query.Query

class TestToReproduceQueryReadPreference {
    // It passes
    @Test
    fun `hasReadPreference returns true if read preference is set`() {
        // given
        val query = Query
            .query(Criteria())
            .withReadPreference(ReadPreference.secondaryPreferred())

        // when
        val hasReadPreference = query.hasReadPreference()

        // then
        assertThat(hasReadPreference).isTrue()
    }

    // It passes
    // Expected : ReadPreference{name=secondaryPreferred, hedgeOptions=null}
    // Actual   : ReadPreference{name=secondaryPreferred, hedgeOptions=null}
    @Test
    fun `query has secondaryPreferred read preference if it is set`() {
        // given
        val query = Query
            .query(Criteria())
            .withReadPreference(ReadPreference.secondaryPreferred())

        // when
        val readPreference = query.readPreference

        // then
        assertThat(readPreference).isEqualTo(ReadPreference.secondaryPreferred())
    }

    // It passes
    @Test
    fun `hasReadPreference returns true if secondary reads are allowed`() {
        // given
        val query = Query
            .query(Criteria())
            .allowSecondaryReads()

        // when
        val hasReadPreference = query.hasReadPreference()

        // then
        assertThat(hasReadPreference).isTrue()
    }

    // It fails
    // Expected : ReadPreference{name=secondaryPreferred, hedgeOptions=null}
    // Actual   : ReadPreference{name=primaryPreferred, hedgeOptions=null}
    @Test
    fun `query has secondaryPreferred read preference if secondary reads are allowed`() {
        // given
        val query = Query
            .query(Criteria())
            .allowSecondaryReads()

        // when
        val readPreference = query.readPreference

        // then
        assertThat(readPreference).isEqualTo(ReadPreference.secondaryPreferred())
    }
}