fix(rfkill): accept events larger than v1 event size

Kernel 5.11 added one more field to the `struct rfkill_event` and broke
unnecessarily strict check in `rfkill.cpp`. According to `linux/rfkill.h`,
we must accept events at least as large as v1 event size and should be
prepared to get additional fields at the end of a v1 event structure.

src/util/rfkill.cpp

@@ -61,7 +61,7 @@ void waybar::util::Rfkill::waitForEvent() {
       break;
     }
 
-    if (len != RFKILL_EVENT_SIZE_V1) {
+    if (len < RFKILL_EVENT_SIZE_V1) {
       throw std::runtime_error("Wrong size of RFKILL event");
       continue;
     }