`DataFrame::select_columns` doesn't work with names containing "."

[alamb]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Put in core/src/dataframe.rs

    #[tokio::test]
    async fn select_with_periods() -> Result<()> {
        // define data with a column name that has a "." in it:
        let array: Int32Array = [1, 10].into_iter().collect();
        let batch =
            RecordBatch::try_from_iter(vec![("f.c1", Arc::new(array) as _)]).unwrap();

        let ctx = SessionContext::new();
        ctx.register_batch("t", batch).unwrap();

        let df = ctx
            .table("t")
            .unwrap()
            .select_columns(&["f.c1"])
            .unwrap();

        let df_results = df.collect().await.unwrap();

        assert_batches_sorted_eq!(
            vec![
                "+------+",
                "| f.c1 |",
                "+------+",
                "| 1    |",
                "| 10   |",
                "+------+",
            ],
            &df_results
        );

        Ok(())
}

Fails like:

thread 'dataframe::tests::select_with_periods' panicked at 'called `Result::unwrap()` on an `Err` value: SchemaError(FieldNotFound { qualifier: Some("f"), name: "c1", valid_fields: Some(["t.f.c1"]) })', datafusion/core/src/dataframe.rs:1437:14

Expected behavior
The test should pass

Additional context
Found while working on #3700

cc @hengfeiyang

[alamb]

Marking this as a good first issue as it should be relatively isolated to the DataFrame code and would be a good way to get some experience with DFSchema, etc