[MC-166434] Player can break block in spawn protection they last hit before being deopped

When an op player hits (=left click once) a block in the spawn protection and is afterwards de-opped, they can still break that block.

Start a server
Op any player other than yourself (from the console) to activate spawn protection
```
/op Notch
```
Op yourself (from the console)
```
/op @p
```
Set your gamemode to survival
```
/gamemode survival @p
```
Click a block in spawn protection once
De-op yourself
```
/deop @p
```
Try breaking the block you hit in the previous step
You can successfully break it