download: add v24.06 links for testing devices (MR 271)

Display v24.06 links for testing devices. The chromebooks Asurada,
Cherry and Corsola don't have images, because they didn't build at the
time when the release was made (kernels didn't build IIRC). They could
be backported if somebody wants to fix it.

config/download.py

@@ -9,6 +9,8 @@ imgs_url = "https://images.postmarketos.org/bpo"
 # service pack, but the images don't include it yet.
 latest_release = "v24.06"
 
+
+# Add '"not_in_stable": True' if we only have pre-built images for edge.
 table = {
     "Main": {
         "pine64-pinephone": {
@@ -173,12 +175,15 @@ table = {
         },
         "google-asurada": {
             "name": "Google Asurada Chromebooks",
+            "not_in_stable": True,
         },
         "google-cherry": {
             "name": "Google Cherry Chromebooks",
+            "not_in_stable": True,
         },
         "google-corsola": {
             "name": "Google Corsola Chromebooks",
+            "not_in_stable": True,
         },
         "google-nyan-big": {
             "name": "Acer Chromebook 13 CB5-311",

page.py

@@ -86,7 +86,7 @@ def download_table(html):
             link = f"{imgs_url}/{latest_release}/{device}/"
             link_edge = f"{imgs_url}/edge/{device}/"
             new += f"<td class='device-name'>{name}</td>\n"
-            if category == "Testing":
+            if "not_in_stable" in device_cfg:
                 new += "<td></td>\n"
             else:
                 new += f"<td><a href='{link}' class='download-link' " \