[SPARK-26218][SQL][FOLLOW UP] Fix the corner case of codegen when casting float to Integer

[luluorta]

What changes were proposed in this pull request?

This is a followup of #27151. It fixes the same issue for the codegen path.

Why are the changes needed?

Result corrupt.

Does this PR introduce any user-facing change?

No

How was this patch tested?

Added Unit test.

[luluorta]

cc @turboFei @cloud-fan

[cloud-fan]

ok to test

[cloud-fan]

add to whitelist

[SparkQA]

Kubernetes integration test starting
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/36701/

[SparkQA]

Kubernetes integration test status success
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/36701/

[SparkQA]

Test build #132101 has finished for PR 30585 at commit 5697260.

• This patch fails Spark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[cloud-fan]

retest this please

[SparkQA]

Kubernetes integration test starting
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/36719/

[SparkQA]

Kubernetes integration test starting
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/36720/

[SparkQA]

Kubernetes integration test status failure
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/36720/

[SparkQA]

Kubernetes integration test status success
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/36719/

[SparkQA]

Test build #132119 has finished for PR 30585 at commit b07a9c7.

• This patch fails Spark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[cloud-fan]

GA passed, merging to master, thanks!