Update Datetime value based on Time Zone value in PowerApps MDA

[v-raghulraja]

Description:
We have identified a bug in the PowerApps Model-Driven App where datetime values are not being handled correctly across different time zones. This issue was discovered during test plans involving multiple time zones, leading to inconsistencies and incorrect data display.

**Steps to Reproduce: **
Open the PowerApps Model-Driven App.
Navigate to the custom page and add the datetime control into the page to be displayed.
Change the datetimezone value to UTC.
Save the changes.
Go to App and observe the datetime value.
Notice that the datetime value is not updated correctly.

Expected Behavior: Datetime values should update correctly based on time zones.

Actual Behavior: Datetime values do not update correctly when switching between time zones, causing inconsistencies and incorrect data display.