Revert "[lldb][debugserver] Fix an off-by-one error in watchpoint identification (#134314)"

This reverts commit 21d9121.

Failure on the aarch64 ubuntu bot when setting the 4th watchpoint;
may be a hardware limitation on that bot.  I thought creating four
watchpoints would be generally safe, but I don't need to do that
for my test, will re-land without it.

Author: jasonmolenda

lldb/test/API/functionalities/watchpoint/consecutive-watchpoints/Makefile

@@ -98,7 +98,7 @@ DNBBreakpointList::FindNearestWatchpoint(nub_addr_t addr) const {
     if (pos.second.IsEnabled()) {
       nub_addr_t start_addr = pos.second.Address();
       nub_addr_t end_addr = start_addr + pos.second.ByteSize();
-      if (addr >= start_addr && addr < end_addr)
+      if (addr >= start_addr && addr <= end_addr)
         return &pos.second;
     }
   }