Fix index for service action translation in service action dialog

[jbouwh]

Proposed change

Fix index for service action translation in service action dialog

Spotted in: #27636

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[jbouwh]

Cc: @karwosts @bramkragten

[emontnemery]

I think this needs to go in to a bugfix for 2025.11