fix: avoid returning temporary IterTuple refs

[ErenAri]

No description provided.

[Copilot]

Pull request overview

Fixes undefined behavior in seal::util::IterTuple tuple-based constructors by ensuring construction returns a concrete IterTuple value (not a reference to a temporary), and adds regression tests to cover tuple lvalue and moved-tuple construction paths.

Changes:

• Update IterTuple tuple constructors to return self_type(...) from seal_apply lambdas instead of braced temporaries / rvalue references.
• Add unit test coverage for constructing IterTuple from a tuple lvalue and from a tuple temporary (moved/rvalue).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
native/src/seal/util/iterator.h	Fix tuple-constructor implementation to avoid returning references to temporaries.
native/tests/seal/util/iterator.cpp	Add regression tests for tuple lvalue and rvalue construction of IterTuple.

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[ErenAri]

@microsoft-github-policy-service agree