Update desktop_tests_config.json and packages_config.json for enhanced ARM64 support

- Set a default value for the chat_id_file in desktop_tests_config.json.
- Added OpenSuseLeap15_arm64 to the hosts_arm64 array in desktop_tests_config.json.
- Introduced new entries for RHEL and SUSE ARM64 in packages_config.json, improving compatibility for ARM64 environments in testing scenarios.

Author: Nikolai Lambrov

desktop_tests_config.json

@@ -10,7 +10,8 @@
   },
   "hosts_arm64": [
     "Windows11_arm64",
-    "Debian12_arm64"
+    "Debian12_arm64",
+    "OpenSuseLeap15_arm64"
   ],
   "hosts": [
     "Windows10",

tests/desktop_tests/tools/packages_config.json

@@ -12,6 +12,10 @@
         "suse": [
             "opensuse"
         ],
+        "rhel-arm64": [],
+        "suse-arm64": [
+            "opensuse leap arm64"
+        ],
         "win-arm64": [
             "windows 11 on arm arm64"
         ],