Fix cutscene in COP 2-5 "Ancient Vows"

[MarianArlt]

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Fixes a wrong cutscene ( #1420 ) after entering through the Dilapidated Gate in Misareaux Coast (F-7) and clicking the Spacial Displacement This affected mission 4-2 (csid 8) so I added one optional dialogue and a new default dialogue there while at it _ Minor style guide clean up for the Dilapidated Gate (4383c20098a31dcbfd507bd758f228c0568b1c97)

Captures used for this PR: Missions: COP 2-4 (An Eternal Melody) ~ COP 2-5 (Ancient Vows) Chains of Promathia: COP 4-1 (Sheltering Doubt) Chains of Promathia: COP 4-2 (The Savage)

[MarianArlt]

Please check Despechiaire again, I cleaned that one up too, structured it a little to make it legible and added comments. The "Sheltering Doubt" optional dialogue needed a missionStatus condition or else it would trigger after going to Bastok. I moved the event references to the bottom; wouldn't want to delete those, somebody put in effort to pick them, but they shouldn't clutter the functions.

(Force Push fixed a missing Unix (LF) line end)