refactor: global time range downdown for alert edit page

[Rajat-Dabade]

Close #3721

[srikanthccv]

The chart currently uses the time range selected in ... during the last ... part of the Step 2 - Define Alert Conditions. With this change, it should use the global time range.

[srikanthccv]

@Rajat-Dabade, let me know if my last comment was not clear. Just enabling the global time range is not enough. It should be used for the graph we show.

[srikanthccv]

Discussed over a call

• The charts should be based on the global time selection.
• The timestamps should be part of the URL, and when a user lands on this page with a shared URL, the timestamps from URL params will be honoured.
• The range from alert definition configuration is independent.

[Rajat-Dabade]

@srikanthccv All the points mentioned above are fixed. Please review it once. Thank you.

[srikanthccv]

Thanks, I will review it.

[srikanthccv]

Where is the global time range filter? How do you expect the user to change the time range to see the data? The issue says we should show the time range dropdown. Or did I miss something?

[Rajat-Dabade]

@srikanthccv, for me it is showing

Have to take the latest pull of the branch?

[Rajat-Dabade]

https://www.loom.com/share/c40667132c7e45b0a3c0239ebfac5d4d?sid=b2544154-f7b2-4b84-8195-d5bca43d8582
cc: @YounixM