[Clang] prevent assertion failure by avoiding always-dependent lambdas in constraint-related nested scopes (#173776) Fixes #172814 --- This patch resolves an issue in which a lambda could be classified as always-dependent while traversing nested scopes, causing an assertion failure during capture handling. Changes in PR #93206 expanded scope-based dependency handling in a way that could mark certain lambdas as always-dependent when no template-dependent context was present. This update refines the criteria for assigning `LambdaDependencyKind::LDK_AlwaysDependent` and applies it only after traversal reaches a distinct enclosing function scope with template-dependent parameters.
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