Renaming Script Contexts

- Determined how the various script contexts were used and renamed accordingly.
- ScriptContext2_Enable/Disable => Lock/UnlockPlayerFieldControls - The sole purpose of the flag is to make sure the player can't move around in the overworld. It has nothing to do with script contexts.
- ScriptContext1 => ScriptContext - It is the global script context used to set up scripts which run over many frames.
- ScriptContext2_RunNewScript => RunScriptImmediately - ScriptContext2's sole purpose was to run scripts immediately and in a separate context, usually while the global context is waiting for things like map loads or screen changes.

src/party_menu.c

@@ -6148,14 +6148,14 @@ static void Task_PartyMenuWaitForFade(u8 taskId)
     if (IsWeatherNotFadingIn())
     {
         DestroyTask(taskId);
-        ScriptContext2_Disable();
-        EnableBothScriptContexts();
+        UnlockPlayerFieldControls();
+        ScriptContext_Enable();
     }
 }
 
 void ChooseContestMon(void)
 {
-    ScriptContext2_Enable();
+    LockPlayerFieldControls();
     FadeScreen(FADE_TO_BLACK, 0);
     CreateTask(Task_ChooseContestMon, 10);
 }
@@ -6183,7 +6183,7 @@ static void CB2_ChooseContestMon(void)
 // Used as a script special for showing a party mon to various npcs (e.g. in-game trades, move deleter)
 void ChoosePartyMon(void)
 {
-    ScriptContext2_Enable();
+    LockPlayerFieldControls();
     FadeScreen(FADE_TO_BLACK, 0);
     CreateTask(Task_ChoosePartyMon, 10);
 }
@@ -6200,7 +6200,7 @@ static void Task_ChoosePartyMon(u8 taskId)
 
 void ChooseMonForMoveRelearner(void)
 {
-    ScriptContext2_Enable();
+    LockPlayerFieldControls();
     FadeScreen(FADE_TO_BLACK, 0);
     CreateTask(Task_ChooseMonForMoveRelearner, 10);
 }
@@ -6245,7 +6245,7 @@ void DoBattlePyramidMonsHaveHeldItem(void)
 // The player can then select to toss items from the bag or take/toss held items from the party
 void BattlePyramidChooseMonHeldItems(void)
 {
-    ScriptContext2_Enable();
+    LockPlayerFieldControls();
     FadeScreen(FADE_TO_BLACK, 0);
     CreateTask(Task_BattlePyramidChooseMonHeldItems, 10);
 }