[libunwind] [libunwind] Call `__arm_za_disable` before entering EH (PR #160905)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,hpp -- libunwind/test/aarch64_za_unwind.pass.cpp libunwind/src/Registers.hpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/libunwind/src/Registers.hpp b/libunwind/src/Registers.hpp
index 332e07368..d266a22b5 100644
--- a/libunwind/src/Registers.hpp
+++ b/libunwind/src/Registers.hpp
@@ -1860,7 +1860,7 @@ public:
   bool        validVectorRegister(int num) const;
   v128        getVectorRegister(int num) const;
   void        setVectorRegister(int num, v128 value);
-  void        jumpto();
+  void jumpto();
   static const char *getRegisterName(int num);
   static constexpr int lastDwarfRegNum() {
     return _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM64;

``````````

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https://github.com/llvm/llvm-project/pull/160905