Defer need-check-nil and clean up stale suppressions

emmylua deserialises an unknown diagnostic code to a catch all that
matches no checker, so every `invisible`, `nil-check` and
`global-element` suppression was silently doing nothing. Renamed to the
emmylua codes. `name-style-check` has no equivalent and is dropped, it
was already disabled under luals.

The `get_tile` suppressions referenced an api typedef bug from 2024
which no longer reproduces.

need-check-nil is deferred rather than disabled on merit: a third of the
407 findings come from MapPosition and BoundingBox being aliased as
`struct|[double, double]`, so every `entity.position.x` reads as
possibly nil. The rest need per site knowledge of runtime invariants.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

exp_scenario/module/control/degrading_tiles.lua

@@ -18,7 +18,6 @@ end
 --- @param surface LuaSurface
 --- @param position MapPosition
 local function degrade_tile(surface, position)
-    --- @diagnostic disable-next-line Incorrect Api Type: https://forums.factorio.com/viewtopic.php?f=233&t=109145&p=593761&hilit=get_tile#p593761
     local tile = surface.get_tile(position)
     local tile_name = tile.name
     local degrade_tile_name = config.degrade_order[tile_name]
@@ -61,7 +60,6 @@ end
 --- @param position MapPosition
 --- @return number?
 local function get_tile_strength(surface, position)
-    --- @diagnostic disable-next-line Incorrect Api Type: https://forums.factorio.com/viewtopic.php?f=233&t=109145&p=593761&hilit=get_tile#p593761
     local tile = surface.get_tile(position)
     local tile_name = tile.name
     local strength = config.strengths[tile_name]