feat(Core/Player): Allow spell validation to be skipped at server owner's risk (#22521)

Co-authored-by: Tereneckla <Tereneckla@pm.me>

src/server/apps/worldserver/worldserver.conf.dist

@@ -1765,6 +1765,16 @@ CleanCharacterDB = 0
 
 PersistentCharacterCleanFlags = 0
 
+#
+#    ValidateSkillLearnedBySpells
+#        Description: If enabled, players will lose spells that are invalid for their race/class.
+#        Default:     1 - (Enabled, enforce valid spells)
+#                     0 - (Disabled, allow invalid spells)
+#        Disabling this and then having your character learn spells which require DBC edits can result in the character not being saved in the database
+#        Disable AT YOUR OWN RISK
+
+ValidateSkillLearnedBySpells = 1
+
 #
 ###################################################################################################