Fixes#1309
The issue was that super calls were blocked inside let expressions
because:
1. The compiler's isClassMemberScope() check didn't skip over lambda
scopes created by let expressions
2. The runtime's findSupermethod() didn't traverse past VmFunction
owners to find the actual class prototype
Changes:
- SymbolTable.java: Updated isClassMemberScope() to skip lambda scopes
before checking if the parent is a class or module scope
- InvokeSuperMethodNode.java: Updated findSupermethod() to skip
VmFunction owners when looking for the class prototype
Added regression tests covering:
- Super method calls inside let expressions
- Super property access inside let expressions
- Nested let expressions with super calls
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Co-authored-by: Jen Basch <jbasch@apple.com>
