Use format input in activity scheduled event

[Assem-Hafez]

Summary

Use our default input parser to parse the input of the activity since it follows same multi argument input we have for workflow. This function helps parsing all activity arguments as json instead of treating json strings arguments as strings.

Changes

• Rename the parsing function from formatWorkflowInputPayload to formatInputPayload as it no longer works for workflow only but activity also
• use the parsing function with the activity scheduled event
• update unit test snapshot to match the new parsing types (numbers where parsed as strings incorrectly)
• while updating the snapshot i notice that the new value precision is not correct... going to address this in the next PR

Screenshots

Before:

After: