gh-35349: Correctly list develop packages in conda dev environment

    
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### 📚 Description

Some develop packages (such as pytest) were missing from the
`environment-dev.yml` file.

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URL: #35349
Reported by: Tobias Diez
Reviewer(s): Matthias Köppe

bootstrap-conda

@@ -11,7 +11,6 @@ STRIP_COMMENTS="sed s/#.*//;"
 shopt -s extglob
 
 DEVELOP_SPKG_PATTERN="@(_develop$(for a in $(head -n 1 build/pkgs/_develop/dependencies); do echo -n "|"$a; done))"
-
 BOOTSTRAP_PACKAGES=$(echo $(${STRIP_COMMENTS} build/pkgs/_bootstrap/distros/conda.txt))
 SYSTEM_PACKAGES=
 OPTIONAL_SYSTEM_PACKAGES=
@@ -37,10 +36,13 @@ for PKG_BASE in $(sage-package list --has-file distros/conda.txt); do
                     ;;
             esac
         else
-            case "$PKG_TYPE" in
-                standard)
+            case "$PKG_BASE:$PKG_TYPE" in
+                *:standard)
                     SAGELIB_SYSTEM_PACKAGES+=" $PKG_SYSTEM_PACKAGES"
                     ;;
+                $DEVELOP_SPKG_PATTERN:*)
+                    DEVELOP_SYSTEM_PACKAGES+=" $PKG_SYSTEM_PACKAGES"
+                    ;;
                 *)
                     SAGELIB_OPTIONAL_SYSTEM_PACKAGES+=" $PKG_SYSTEM_PACKAGES"
                     ;;