Preparing buildx cache is allowed without --push-image flag (#24028)

The previous version of buildx cache preparation implied --push-image
flag, but now this is completely separated (we do not push image,
we just prepare cache), so when mutli-platform buildx preparation is
run we should also allow the cache to run without --push-image flag.

(cherry picked from commit 8f3a9b8)

dev/breeze/src/airflow_breeze/commands/ci_image_commands.py

@@ -444,9 +444,14 @@ def build_ci_image(verbose: bool, dry_run: bool, ci_image_params: BuildCiParams)
     :param dry_run: do not execute "write" commands - just print what would happen
     :param ci_image_params: CI image parameters
     """
-    if not ci_image_params.push_image and ci_image_params.is_multi_platform():
+    if (
+        ci_image_params.is_multi_platform()
+        and not ci_image_params.push_image
+        and not ci_image_params.prepare_buildx_cache
+    ):
         get_console().print(
-            "\n[red]You cannot use multi-platform build without using --push-image flag![/]\n"
+            "\n[red]You cannot use multi-platform build without using --push-image flag or "
+            "preparing buildx cache![/]\n"
         )
         return 1, "Error: building multi-platform image without --push-image."
     fix_group_permissions(verbose=verbose)

dev/breeze/src/airflow_breeze/commands/production_image_commands.py

@@ -480,9 +480,14 @@ def build_production_image(
     :param dry_run: do not execute "write" commands - just print what would happen
     :param prod_image_params: PROD image parameters
     """
-    if not prod_image_params.push_image and prod_image_params.is_multi_platform():
+    if (
+        prod_image_params.is_multi_platform()
+        and not prod_image_params.push_image
+        and not prod_image_params.prepare_buildx_cache
+    ):
         get_console().print(
-            "\n[red]You cannot use multi-platform build without using --push-image flag![/]\n"
+            "\n[red]You cannot use multi-platform build without using --push-image flag"
+            " or preparing buildx cache![/]\n"
         )
         return 1, "Error: building multi-platform image without --push-image."
     fix_group_permissions(verbose=verbose)