fix: remove use of incompatible_use_toolchain_transition

[EdSchouten]

As documented at https://bazel.build/rules/lib/globals/bzl.html#rule:

incompatible_use_toolchain_transition
bool; default is False
Deprecated, this is no longer in use and should be removed.

According to bazelbuild/bazel#14049, this feature was enabled by default back in 2021.

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature (please, look at the "Scope of the project" section in the README.md file)
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

rule() is called with incompatible_use_toolchain_transition = True. This argument is a no-op right now, because Bazel merely provides a placeholder for this option. However, having this argument in place would cause breakages if the Bazel team decides to remove this option altogether.

What is the new behavior?

We call it without this argument. This does not cause any noticeable differences.

Does this PR introduce a breaking change?

• Yes
• No

Other information