Bug fix on DFField to Field conversion: preserve metadata

[metesynnada]

Which issue does this PR close?

Closes #3964.

Rationale for this change

While converting DFSchema to Schema, field metadata is not preserved. It may cause future bugs on methods like alias.

What changes are included in this PR?

Changing From<DFSchema> for Schema method.

Are there any user-facing changes?

NA

[alamb]

Thanks @metesynnada -- this looks great

[alamb]

💯 for fixing a bug by deleting code

[ursabot]

Benchmark runs are scheduled for baseline = 8792a01 and contender = e73a43c. e73a43c is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped ⚠️ Benchmarking of arrow-datafusion-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-datafusion-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-datafusion-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-datafusion-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java