Test syntax warnings emitted in a `finally` block

[tomasr8]

This is a followup to #131993

For context: #131993 (comment)

Please add also a compile() test for a warning emitted in the finally block. Currently it is emitted twice because the code in the finally block is complied twice (for normal execution and for exception handling).

Linked PRs

• gh-132435: Test syntax warnings in a finally block #132436
• [3.13] gh-132435: Test syntax warnings in a finally block (GH-132436) #132503