docs: Clarify when the Lambda function is invoked for the aws_lambda_function data source

[acwwat]

Description

This PR is to add a note that explains when the aws_lambda_function will invoke the Lambda function, which is on the first apply and every subsequent plan.

Relations

Closes #41051

References

Referred to Ephemeral: aws_lambda_invocation for similar wordings.

Output from Acceptance Testing

n/a

[github-actions]

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[ewbankkit]

LGTM 🚀.

[ewbankkit]

@acwwat Thanks for the contribution 🎉 👏.

[github-actions]

This functionality has been released in v5.85.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!