Spigot stored previous componenents as new ChatComponentText("legacy codes") which
this patch aimed to convert to the new format.
However, the impl ended up converting all lines.
If a plugin had a section symbol in the lore that isn't a color conversion, it would
make trigger this process every single time.
So now we will only process it if the pattern looks like the legacy bukkit format
Fixes#3869
Aikar
BillyGalbreath