Revert of a Revert | ListInputModal (#82854)

This reverts commit 9acf5bd821.

MSO determined that because we use `file(...)` instead of a string
instead of an asset being locked to its initial state via a cache object
we are sending it as it is on disk every time. which means that when a
new server deployment updates the tgui it will send this new tgui code
even if the currently running DM code does not support it.

code/modules/asset_cache/assets/tgui.dm

@@ -1,3 +1,23 @@
+// If you use a file(...) object, instead of caching the asset it will be loaded from disk every time it's requested.
+// This is useful for development, but not recommended for production.
+// And if TGS is defined, we're being run in a production environment.
+
+#ifdef TGS
+/datum/asset/simple/tgui
+	keep_local_name = FALSE
+	assets = list(
+		"tgui.bundle.js" = "tgui/public/tgui.bundle.js",
+		"tgui.bundle.css" = "tgui/public/tgui.bundle.css",
+	)
+
+/datum/asset/simple/tgui_panel
+	keep_local_name = FALSE
+	assets = list(
+		"tgui-panel.bundle.js" = "tgui/public/tgui-panel.bundle.js",
+		"tgui-panel.bundle.css" = "tgui/public/tgui-panel.bundle.css",
+	)
+
+#else
 /datum/asset/simple/tgui
 	keep_local_name = TRUE
 	assets = list(
@@ -11,3 +31,5 @@
 		"tgui-panel.bundle.js" = file("tgui/public/tgui-panel.bundle.js"),
 		"tgui-panel.bundle.css" = file("tgui/public/tgui-panel.bundle.css"),
 	)
+
+#endif