Fix parsing error in Autogen CurrentMessage

[davorrunje]

Description

Fixes parsing error caused by variable number of stars outputted by AutoGen IOStream classes

Fixes #200

Type of change

Please delete options that are not relevant.

• Bug fix (a non-breaking change that resolves an issue)

Checklist

• My code adheres to the style guidelines of this project (scripts/lint.sh shows no errors)
• I have conducted a self-review of my own code
• I have made the necessary changes to the documentation
• My changes do not generate any new warnings
• I have added tests to validate the effectiveness of my fix or the functionality of my new feature
• Both new and existing unit tests pass successfully on my local environment by running scripts/test-cov.sh
• I have ensured that static analysis tests are passing by running scripts/static-anaylysis.sh
• I have included code examples to illustrate the modifications

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
fastagency/runtime/autogen/base.py	94.25% <100.00%> (+0.06%)	⬆️