feat(stepfunctions): Start Execution fills existing ExecutionInput

[zelzhou]

Problem

1. We should auto fill the existing ExecutionInput when start a new execution in ExecutionDetails tab.
2. Circular dependencies exists in the StepFunctions extension logic, we need to fix those circular dependency in order for the build to pass.

Solution

1. Allow the CDN bundle to pass back the ExecutionInput when invoking startExecutionMessageHandler and added ExecutionInput parameter to executeStateMachine command.
2. The circular dependencies were caused by a chain: ExecutionDetailProvider → handleMessage → utils → executeStateMachine → ExecutionDetailProvider. Separating utils.ts into two files broke part of the cycle by removing webview functions from the utils that handleMessage needed. However, a direct cycle remained between executeStateMachine and ExecutionDetailProvider and we cannot break this cycle by separating the utils, we introduced a callback to openExecutionDetails in handleMessage -> executeStateMachine so that we don't need to static import ExecutionDetailProvider anymore.

Demo

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[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
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• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
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[zelzhou]

This PR is for an unreleased feature under development of the feature/stepfunction-execution branch

[laileni-aws]

/retryBuilds