Erik Eckstein 3ec5d7de24 SIL: replace the is_escaping_closure instruction with destroy_not_escaped_closure ...

The problem with `is_escaping_closure` was that it didn't consume its operand and therefore reference count checks were unreliable.
For example, copy-propagation could break it.
As this instruction was always used together with an immediately following `destroy_value` of the closure, it makes sense to combine both into a `destroy_not_escaped_closure`.
It
1. checks the reference count and returns true if it is 1
2. consumes and destroys the operand

2025-01-24 19:23:27 +01:00

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