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/fldeff_sweetscent.c

@@ -93,7 +93,7 @@ static void FailSweetScentEncounter(u8 taskId)
     {
         CpuFastSet(gPaletteDecompressionBuffer, gPlttBufferUnfaded, 0x100);
         SetWeatherPalStateIdle();
-        ScriptContext1_SetupScript(EventScript_FailSweetScent);
+        ScriptContext_SetupScript(EventScript_FailSweetScent);
         DestroyTask(taskId);
     }
 }