fix(lava): correctly add lava-dispatcher

When enabling the lava override, it completely clears the
IMAGE_PREINSTALL list (except for the lava-dispatcher package). This is
because an incorrect append is used (we append to IMAGE_PREINSTALL:lava
instead of just appending in case lava is selected).

Fixes: 6bf2e42 ("meta-isar: images: make LAVA an optional feature")
Signed-off-by: Felix Moessbauer <[email protected]>

Author: fmoessbauer

meta-isar/recipes-core/images/mtda-image.bb

@@ -68,7 +68,7 @@ IMAGE_PREINSTALL:remove:ubuntu-noble = "pdudaemon-client"
 IMAGE_INSTALL += "python3-hap-python"
 
 # LAVA support
-IMAGE_PREINSTALL:lava += "lava-dispatcher"
+IMAGE_PREINSTALL:append:lava = " lava-dispatcher"
 
 # Expand root file-system
 IMAGE_INSTALL:append = " expand-on-first-boot "