wails: do not overwrite user provided tools

For example when building a project with golang 1.26 we want to use the
user provoided compiler and not have to run wailts like:
  GOTOOLCHAIN=go1.26.0 wails build -compiler '${go_1_26}/bin/go'

pkgs/by-name/wa/wails/package.nix

@@ -64,7 +64,7 @@ buildGoModule (finalAttrs: {
   # As Wails calls a compiler, certain apps and libraries need to be made available.
   postFixup = ''
     wrapProgram $out/bin/wails \
-      --prefix PATH : ${
+      --suffix PATH : ${
         lib.makeBinPath [
           pkg-config
           go
@@ -72,7 +72,7 @@ buildGoModule (finalAttrs: {
           nodejs
         ]
       } \
-      --prefix LD_LIBRARY_PATH : "${
+      --suffix LD_LIBRARY_PATH : "${
         lib.makeLibraryPath (
           lib.optionals stdenv.hostPlatform.isLinux [
             gtk3