stdenv setup: Always use both propagated files

This continues #23374, which always kept around both attributes, by
always including both propagated files: `propgated-native-build-inputs`
and `propagated-build-inputs`. `nativePkgs` and `crossPkgs` are still
defined as before, however, so this change should only barely
observable.

This is an incremental step to fully keeping the dependencies separate
in all cases.

pkgs/development/libraries/qt-5/hooks/qtbase-setup-hook.sh

@@ -33,7 +33,7 @@ addToQMAKEPATH() {
 # package depending on the building package. (This is necessary in case
 # the building package does not provide runtime dependencies itself and so
 # would not be propagated to the user environment.)
-qtCrossEnvHook() {
+qtEnvHook() {
     addToQMAKEPATH "$1"
     if providesQtRuntime "$1"; then
         if [ "z${!outputBin}" != "z${!outputDev}" ]; then
@@ -42,20 +42,11 @@ qtCrossEnvHook() {
         propagatedUserEnvPkgs+=" $1"
     fi
 }
-crossEnvHooks+=(qtCrossEnvHook)
-
-qtEnvHook() {
-    addToQMAKEPATH "$1"
-    if providesQtRuntime "$1"; then
-        if [ "z${!outputBin}" != "z${!outputDev}" ]; then
-            propagatedNativeBuildInputs+=" $1"
-        fi
-        if [ -z "$crossConfig" ]; then
-        propagatedUserEnvPkgs+=" $1"
-        fi
-    fi
-}
-envHooks+=(qtEnvHook)
+if [ "$crossConfig" ]; then
+   crossEnvHooks+=(qtEnvHook)
+else
+   envHooks+=(qtEnvHook)
+fi
 
 postPatchMkspecs() {
     local bin="${!outputBin}"