modules/image/repart: repart.imageFile(Basename) -> image.baseName

Rename remaining uses of renamed option repart.imageFileBasename to
image.baseName.

Follow up to https://github.com/NixOS/nixpkgs/pull/401872
Removes a warning when using repart-verity-store.nix.

nixos/modules/image/repart-image.nix

···
   # arguments
   name,
   version,
-  imageFileBasename,
+  baseName,
   compression,
   fileSystems,
   finalPartitions,
···
       echo "Building image with systemd-repart..."
       unshare --map-root-user fakeroot systemd-repart \
         ''${systemdRepartFlags[@]} \
-        ${imageFileBasename}.raw \
+        ${baseName}.raw \
         | tee repart-output.json
 
       runHook postBuild
···
     # separate derivation to allow users to save disk space. Disk images are
     # already very space intensive so we want to allow users to mitigate this.
     + lib.optionalString compression.enable ''
-      for f in ${imageFileBasename}*; do
+      for f in ${baseName}*; do
         echo "Compressing $f with ${compression.algorithm}..."
         # Keep the original file when compressing and only delete it afterwards
         ${compressionCommand} $f && rm $f
       done
     ''
     + ''
-      mv -v repart-output.json ${imageFileBasename}* $out
+      mv -v repart-output.json ${baseName}* $out
 
       runHook postInstall
     '';

nixos/modules/image/repart-verity-store.nix

···
                   | assert_uki_repart_match.py "${config.system.build.intermediateImage}/repart-output.json"
 
                 # copy the uncompressed intermediate image, so that systemd-repart picks it up
-                cp -v ${config.system.build.intermediateImage}/${config.image.repart.imageFileBasename}.raw .
-                chmod +w ${config.image.repart.imageFileBasename}.raw
+                cp -v ${config.system.build.intermediateImage}/${config.image.baseName}.raw .
+                chmod +w ${config.image.baseName}.raw
               '';
 
               # replace "TBD" with the original roothash values

nixos/modules/image/repart.nix

···
         mkfsEnv = mkfsOptionsToEnv cfg.mkfsOptions;
         val = pkgs.callPackage ./repart-image.nix {
           systemd = cfg.package;
-          imageFileBasename = config.image.baseName;
+          inherit (config.image) baseName;
           inherit (cfg)
             name
             version