Fix GH Actions for doc-only PR

[yhwang]

Description

When there is no code change, some steps in the GA workflow are not able to be performed and cause failures. Put the if condition to check the code change in those steps. For non-required tests, use paths-ignore to skip the test directly.

Motivation and Context

fix the GH action error when a PR contains only document changes.
example failures:

• https://github.com/prestodb/presto/actions/runs/13273735011/job/37058943327?pr=24534
• https://github.com/prestodb/presto/actions/runs/13273734993/job/37063671179?pr=24534

Impact

doc-only PR can't be merged and need this fix

Test Plan

verify the doc-only PR after this PR is merged

Contributor checklist

• Please make sure your submission complies with our contributing guide, in particular code style and commit standards.
• PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• If release notes are required, they follow the release notes guidelines.
• Adequate tests were added if applicable.
• CI passed.

Release Notes

Please follow release notes guidelines and fill in the release notes below.

== NO RELEASE NOTE ==

[czentgr]

Thanks. General comment.

[czentgr]

Thanks!
Nit: Please update the description to mention that the arrow workflow is excluded from runs for doc-only changes rather than adding the if check as described.

[yhwang]

updated!