[libunwind] Make Apple OS version XFAILs robust to patch-level versions (#218125)

We are seeing some failures since some of the Apple CI runners have been
updated to 26.5.2. That was caused by the regular expressions not
matching patch level version bumps.

GitOrigin-RevId: 0976d75180f482c1175ea1f204f9bfd56dd163b1

test/aarch64_za_unwind.pass.cpp

diff --git a/test/aarch64_za_unwind.pass.cpp b/test/aarch64_za_unwind.pass.cpp
index 32e77b0..80755a8 100644
--- a/test/aarch64_za_unwind.pass.cpp
+++ b/test/aarch64_za_unwind.pass.cpp
@@ -11,7 +11,7 @@
 
 // Fails on targets that support SME but where the system libunwind is too old
 // to disable ZA before resuming from unwinding.
-// UNSUPPORTED: stdlib=system && target={{.+}}-apple-{{.*}}{{(11|12|13|14|15|26)(\.\d+)?}}
+// UNSUPPORTED: stdlib=system && target={{.+}}-apple-{{.*}}{{(11|12|13|14|15|26)(\.\d+)*}}
 
 #include <alloca.h>
 #include <libunwind.h>

test/ra_sign_state.pass.cpp

diff --git a/test/ra_sign_state.pass.cpp b/test/ra_sign_state.pass.cpp
index 4c40789..b661ae0 100644
--- a/test/ra_sign_state.pass.cpp
+++ b/test/ra_sign_state.pass.cpp
@@ -14,8 +14,8 @@
 
 // The libSystem unwinder does not correctly read UNW_AARCH64_RA_SIGN_STATE, at
 // least through OS version 27.0
-// XFAIL: stdlib=apple-libc++ && target={{.*}}-apple-{{.*}}{{(11|12|13|14|15|26)(\.\d+)?}}
-// XFAIL: stdlib=apple-libc++ && target={{.*}}-apple-{{.*}}27.0
+// XFAIL: stdlib=apple-libc++ && target={{.*}}-apple-{{.*}}{{(11|12|13|14|15|26)(\.\d+)*}}
+// XFAIL: stdlib=apple-libc++ && target={{.*}}-apple-{{.*}}27.0{{(\.\d+)*}}
 
 // clang-format on