lvl 1 runs: remove xp from 3 last bosses

[snouz]

Fix the problem with the 3 forced battles in Pandemonium are not escapable; To have the battles not give any exp or to remove the monsters immunity to any status effects, so that we can have a full lvl 1 party without having to a level 30 Zidane or 3 member having level 22, 22,23. This is for lvl 1 runs

Originally posted by @Echokiss in #390 (comment)

[DV666]

Very easy to do via the BattlePatch.txt: maybe make a tiny mod to make a level 1 run more easier? I can take care of it if need be.

[Trivial-Man]

If this is going to be an optional enhancement, I'd like to also request that the following enemies be potentially flagged to provide no xp for a level 1 Perfect Game:

• The unavoidable encounter with Plant Spiders after Plant Brain (with luck this encounter doesn't give enough xp to level, but no exp at all would still be nice)
• Tantarian (Running Shoes are limited and it's drop is one of the sources of them)
• Several unavoidable Bandersnatch encounters in Alexandria Castle by Beatrix (Beatrix can absorb the xp, but it would be nice to keep even temporary party members from gaining any)
• Several Mistodon encounters in Alexandria by Beatrix (some of these are avoidable, but some aren't)

[faospark]

try the no exp mod. it should block any exp you receive from enemies