GH-42243: [Swift] Update isValidBuilderType to not required instance of type

[abandy]

Rationale for this change

isValidBuilderType should take a Type and not require an instance of a type in order to validate.

What changes are included in this PR?

Updated isValidBuilderType to take a Type instead of an instance.

Are these changes tested?

Yes

• GitHub Issue: [Swift] Update isValidBuilderType method to take a type instead of a value #42243

[kou]

+1

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 7 benchmarking runs that have been run so far on merge-commit cb1f9b7.

There were 6 benchmark results with an error:

• Commit Run on ec2-r5-4xlarge-us-east-2 at 2024-06-22 02:30:35Z
  • partitioned-dataset-filter (R) with dataset=dataset-taxi-parquet, language=R, query=payment_type_3
  • partitioned-dataset-filter (R) with dataset=dataset-taxi-parquet, language=R, query=payment_type_3
• and 4 more (see the report linked below)

There were no benchmark performance regressions. 🎉

The full Conbench report has more details. It also includes information about 27 possible false positives for unstable benchmarks that are known to sometimes produce them.