Environment vars not loaded from file when runme invoked with --filename flag

[eshepelyuk]

Hello

Let me describe the bug

1. Runme version

runme --version
runme version 3.9.4 (Homebrew) on 2024-11-21T22:49:56Z

2. Env file, named .env

export MY_VAR=SOME_VALUE

3. Runme playbook, named test.runme

```sh {"name":"env"}
echo "@@${MY_VAR}@@"
```

4. Invoking runme run with --filename doesn't read the variables from .env

runme run --all -y --filename test.runme
@@@@

5. Although runme run without --filename works OK

runme run --all -y
@@SOME_VALUE@@

The same inconsistent behaviour is happening when invoking runme tui.

[sourishkrout]

Thanks for reporting this issue, @eshepelyuk.

We will look into it and get back to you.