[lldb] Extend isAArch64 to arm64 and arm64e

This fixes TestMemoryTag on Apple Silicon.

(cherry picked from commit a452ca4)

Author: JDevlieghere

lldb/packages/Python/lldbsuite/test/lldbtest.py

@@ -1297,7 +1297,8 @@ def getCPUInfo(self):
 
     def isAArch64(self):
         """Returns true if the architecture is AArch64."""
-        return self.getArchitecture().lower() == "aarch64"
+        arch = self.getArchitecture().lower()
+        return arch in ["aarch64", "arm64", "arm64e"]
 
     def isAArch64SVE(self):
         return self.isAArch64() and "sve" in self.getCPUInfo()