Update Google.php

[iYared]

Fix: Exclude ctz Parameter for All-Day Events to Resolve Google Calendar Android Issue

This PR addresses an issue with the generate method in the Google calendar link generator, specifically for all-day events on Android devices. When the ctz (timezone) parameter is included for all-day events, Android devices encounter problems interpreting the event duration correctly, leading to inaccurate calendar entries.

Changes:

• Updated the generate method to conditionally exclude the ctz parameter if the event is an all-day event.
• This ensures that all-day events function as expected across platforms, especially on Android, by omitting the timezone parameter.

Impact:

This fix improves compatibility and accuracy for all-day events on Android, resolving an existing issue where Android misinterprets all-day events when the ctz parameter is included.

References:

• Fixes issue with all-day event compatibility on Android when ctz is passed in the URL.

TEST CASE (Same Event Link)

All Day Event with CTZ Param (Test on Android : Google Calendar) - Issue
https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20241101%2F20241103&details=EVENT_DESC&location=EVENT_LOCATION&text=EVENT_TITLE&ctz=UTC

All Day Event Without CTZ Param (Test on Android : Google Calendar) - No Isse
https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20241101%2F20241103&details=EVENT_DESC&location=EVENT_LOCATION&text=EVENT_TITL

[alies-dev]

Thank you for such detailed explanation, @iYared ! Looks great! I assume we also need to update tests, can you please take a look?