[BUG]: Code coverage reports last curly brace as uncovered in Kotlin code

[Rd4dev]

Describe the bug

When generating code coverage reports using the code coverage tool for the Oppia Android, the last curly brace of some Kotlin functions is incorrectly marked as uncovered.

• This issue is a tracking item of the Code Coverage Enforcement feature - [Feature Request]: Introduce support for code coverage & enforcement (GSoC'24 4.1) #5343.
• The issue may be related to how the Kotlin compiler generates bytecode, possibly similar to an issue reported for Groovy (see Last curly bracket of the method not getting covered jacoco/jacoco#1233).

This issue has been observed in files: CpuPerformanceSnapshotter.kt, CommandExecutorImpl.kt, and TodoOpenCheck.kt.

It was suggested that there could be two potential causes:

1. The code is not finishing execution in the test, which may require adding properly configured tests to ensure complete execution.
2. Dead code is being generated by the Kotlin compiler, which would require further investigation and possibly bytecode analysis.

Steps To Reproduce

Code snippet from CpuPerformanceSnapshotter.kt:

    @OptIn(ObsoleteCoroutinesApi::class)
    private fun createCommandQueueActor(): SendChannel<CommandMessage> {
      return coroutineScope.actor(capacity = Channel.UNLIMITED) {
        for (message in channel) {
         ...
        }
-     }
    }

Generate code coverage report for the file CpuPerformanceSnapshotter.kt:

bazel run //scripts:run_coverage -- $(pwd) domain/src/main/java/org/oppia/android/domain/oppialogger/analytics/CpuPerformanceSnapshotter.kt

The generated report:

Similarly observed with

CommandExecutorImpl.kt

path: scripts/src/java/org/oppia/android/scripts/common/CommandExecutorImpl.kt

TodoOpenCheck.kt

path: scripts/src/java/org/oppia/android/scripts/todo/TodoOpenCheck.kt

Expected Behavior

The last curly brace should be marked as covered in the report if the function is fully executed in the tests.

Bazel Version

6.5.0

Additional context

Related issue: jacoco/jacoco#884

What device/emulator are you using?

No response

Which Android version is your device/emulator running?

No response

Which version of the Oppia Android app are you using?

No response