Guard missing DaCe configuration keys

[guanLeTea]

Avoid raising "KeyError" when running against DaCe versions that do not declare all configuration keys.

The change:

• skips missing configuration keys instead of failing
• reports skipped keys once per process
• preserves existing behavior when the keys are present

This restores compatibility with upstream DaCe while leaving the extended fork unchanged.

Validation:

• Tested on both upstream main and the extended DaCe branch.
• Upstream DaCe no longer fails during pin_build_caching.
• Existing behavior is unchanged when the configuration keys exist.