Fixes #36915 - Correct datetime input for report generation

[sjha4]

Steps to reproduce:

1. Go to Monitor > Report Templates > Click on Generate against any template.
2. On the template generate form > Click the Generate at calendar icon to open input datetime calendar. The date/time overlap.
3. Patch with this PR.
4. On the template generate form > Click the Generate at calendar icon to open input datetime calendar. The date/time should not overlap.
5. Upon entering some value in the field and generating report, make sure report generation task is scheduled for the selected time in foreman tasks.

[ianballou]

[test katello]

[ianballou]

[test]

[ianballou]

Before:

After:

The box looks better but I'm not seeing a time picker.

[sjha4]

The box looks better but I'm not seeing a time picker.

Guessing it's a firefox thingy..

[ianballou]

Works great!

[MariaAga]

@ianballou Please don't merge PRs with failing tests :) added a fix here: #9910

[ianballou]

@MariaAga sorry about that, I thought it was just the rpm build that seems to usually be failing. I'll take a look at the other one.

[sjha4]

Oh I missed that failing test too..Sorry about that..