fix(ios): update reset flags placement in notificationReceived

[erisu]

Motivation and Context

Fix the placement of when the reset flags are applied. And update of #319

Description

Move the reset flags into the condition when notificationMessage and callbackId exists.

Related Issue

n/a

How Has This Been Tested?

Tested pushing a payload in all states (background, foreground, inactive).
Confirmed that the coldstart and foreground flags continue to display correctly in payload.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.