[PR] Align key/id path validation for variables and connections [airflow]

["henry3260 (via GitHub)" <gi...@apache.org>]

henry3260 opened a new pull request, #63897:
URL: https://github.com/apache/airflow/pull/63897

   ## Why
   Before this PR, similar key/id parameters were handled differently:
   
   - `xcoms`.py used `Path(min_length=1)` (request validation layer),
   - variables.py used` Path()` plus manual if not variable_key checks (runtime layer),
   - connections.py used `Path()` without a minimum-length constraint.
   
   This inconsistency caused uneven behavior and error handling for the same class of inputs.
   
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Re: [PR] Align key/id path validation for variables and connections [airflow]

["potiuk (via GitHub)" <gi...@apache.org>]

potiuk merged PR #63897:
URL: https://github.com/apache/airflow/pull/63897


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