Small fix to prevent Israel diplo screen from being gray

[joedementri]

In v23.1 LekMod Single Player, several leader screens are grayed out and has the "No scene loaded for this leader" when meeting/interacting.

To fix this (using Israel as an example):

1. Added a MC_Isreal_Leaderhead.xml file with the fallback image as David.dds. This is similar to how Scotland is set up.
2. Edited the .modinfo file to include this file with the correct md5 hash.
3. Update the override Civ5Units.xml file, replacing David_Scene.xml to MC_ISRAEL_Leaderhead.xml. Again this is similar to how Scotland is set up.

Tested it real quick in IGE afterwards, and now we can see King David when meeting/interacting with him.

Progress:

• [x] Fix Akkad Diplo Screen

• [x] Fix Argentina Diplo Screen

• [x] Fix Finland Diplo Screen

• [x] Fix Israel Diplo Screen

• [x] Fix Romania Diplo Screen

[joedementri]

Will be fixing this to work in v24, once done will take it out of draft mode