Add flet if no dependencies provided for flet publish command (#4508)

Fix #4493

Author: FeodorFitsner

sdk/python/packages/flet-cli/src/flet_cli/commands/publish.py

@@ -113,6 +113,7 @@ def add_arguments(self, parser: argparse.ArgumentParser) -> None:
         )
 
     def handle(self, options: argparse.Namespace) -> None:
+        import flet.version
         from flet.utils.pip import ensure_flet_web_package_installed
 
         ensure_flet_web_package_installed()
@@ -197,6 +198,9 @@ def handle(self, options: argparse.Namespace) -> None:
                 )
                 print(f"{reqs_filename} dependencies: {deps}")
 
+        if len(deps) == 0:
+            deps = [f"flet=={flet.version.version}"]
+
         temp_reqs_txt = Path(tempfile.gettempdir()).joinpath(random_string(10))
         with open(temp_reqs_txt, "w") as f:
             f.writelines(dep + "\n" for dep in deps)

sdk/python/packages/flet/src/flet/cli.py

@@ -1,7 +1,6 @@
 import subprocess
 import sys
 
-import flet.version
 from flet.utils.pip import ensure_flet_cli_package_installed