Revert "tests: kernel: interrupt: Disable on ARM64 QEMU targets"

This reverts the commit 7d8a1192
because GCC is now configured to not emit ldp/stp Qn instructions for
consecutive 32-byte loads and stores, and the nested interrupt handling
failure due to the missing emulation of these instructions no longer
occurs.

For more details, refer to the GitHub issue #49491 and #49806.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>