Fix negative interval prettyprint

[Jefffrey]

Which issue does this PR close?

Related to apache/datafusion#4220

Rationale for this change

Current issue where nanoseconds/milliseconds part can print the minus sign if negative, which can double up with the seconds, not to mention is incorrectly placed (after the decimal). This fixes it to only have a single sign before the seconds, if negative

What changes are included in this PR?

Are there any user-facing changes?

[tustvold]

Why does this only handle negative seconds, as opposed to negative intervals in general?

[Jefffrey]

Why does this only handle negative seconds, as opposed to negative intervals in general?

For negative intervals in general, the current pretty print works, as will have the negative sign before each part. But special handling is needed for seconds/fractions of a second, as only need to have one sign for the both of them, unlike current behaviour which has a sign for the fractions of a second as well

[tustvold]

Makes sense, thank you

[ursabot]

Benchmark runs are scheduled for baseline = 3788fd2 and contender = 5fb337d. 5fb337d 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-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-rs-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