Library detection in runtime/ErrorHandling/TestDwarf.java fails on ppc64le RHEL8.5 for libpthread-2.28.so

The test fails with

[dwarf] ##### Find filename and line number for offset 0x000096a8 in library /lib64/glibc-hwcaps/power9/libpthread-2.28.so #####
[dwarf] Failed to load DWARF file for library /lib64/glibc-hwcaps/power9/libpthread-2.28.so or find DWARF sections directly inside it.

and in stderr

java.lang.RuntimeException: Must find library in "C [libpthread-2.28.so+0x96a8] start_thread+0xf8": expected true, was false

Looks like the '-' in the lib-name libpthread-2.28.so is currently not allowed in the pattern of the test. This is similar to JDK-8293201 .