Release v3.5.3

Fixes

• Fixed issue #35 by hoisting a branch in the expression generator, correcting incorrect cloning behaviour in affected scenarios
• Fixed source generator emitting unqualified Type references, which caused compilation errors when user code defined a conflicting Type symbol in scope

Chores

• Added TypeNameConflictTests to guard against regressions when user-defined types conflict with BCL type names
• Expanded CollectionTests with additional coverage for collection cloning edge cases