Resolve nightly core failure

[scbedd]

Ok, so the failure this PR is fixing is one introduced by my previous PR #41629

Here is an example of the failure

You can see that it's something along the lines of

the version of azure-core that was expected wasn't in the prebuilt wheel dir

And it would crop up in one of two ways:

1. We fail to find the azure-core wheel because we didn't update to expect the dev version of the package, so when we look for the GA version in the artifact directory where only nightly alpha exist, we can't find it.
2. We fail to find the azure-core wheel because we DO expect to find the dev version of the package, but something went wrong during generation and we didn't produce the dev version in the build phase.

This is because we use os.walk to traverse the package directory to find the _version.py file for azure-core. The issue was, we just looked at all folders beneath the package, and it is nondeterministic by default for speed.

The issues were cropping up because the setting of the dev version was targeting the wrong _version.py. This one to be precise.

This PR updates the traversal looking for the package version to exclude a few directories that I know will only be related to build/test, so we can ignore them.

[Copilot]

Pull Request Overview

This PR fixes a nondeterministic traversal issue that caused incorrect _version.py files to be picked up during nightly builds by excluding certain directories, and adds error handling and logging improvements.

• Adds an exit path with logging if no version file is found
• Reorders and enriches output in the dev-version script
• Excludes test/build directories from the version-file search
• Refactors package generation ordering to avoid surprises
• Reformats long tuples in setup parsing for readability

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
tools/azure-sdk-tools/ci_tools/versioning/version_shared.py	Exit early if no version file is found; added error log
tools/azure-sdk-tools/ci_tools/versioning/version_set_dev.py	Adjusted print order; added “Processing” message
tools/azure-sdk-tools/ci_tools/scenario/generation.py	Moved ParsedSetup.from_path ahead of discovery
tools/azure-sdk-tools/ci_tools/parsing/parse_functions.py	Reformatted tuple signatures; added trailing commas for consistency

Comments suppressed due to low confidence (1)

tools/azure-sdk-tools/ci_tools/parsing/parse_functions.py:436

• The new directory-exclusion logic in get_version_py would benefit from dedicated tests to ensure excluded folders like tests/ and venv/ are never traversed.

    EXCLUDE = {

[scbedd]

The failures from ai packages are not caused by this PR. Just going to bypass and merge.