style(loader): Replace all loaders with centered blue circular spinner

[abansal15]

Description

Replaced the default triangular loader with the blue circular spinner to maintain UI consistency across the site. Updated the corresponding CSS and markup without affecting functionality.

Related issue

#924

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.

[dpgiakatos]

Hello, I have only one question. I added it inline. Overall, this is a good PR. After my question is answered, I will continue the code review. Thanks.

[dpgiakatos]

Why did you change the style here?

[dpgiakatos]

Revert the changes here

[dpgiakatos]

Also, here the change of style is related to the changes in 643.

[dpgiakatos]

Revert the changes here

[abansal15]

@dpgiakatos i have done the changes in these style beacuse when i was solving the issue then i was facing a problem that charts Alarms over Time and Alarms by Severities were appearing one below the other instead of in the same row as intended therefore i tried to change the style to solve this and done the above changes and just now when i revert these style changes in my local then i found that there is much not big problem but with these changes charts are taking half of the container width and ensuring a consistent and balanced layout.. if you did prefer to revert these changes please let me know..

[dpgiakatos]

This depends on the screen size and your screen resolution. Before making any changes in the style, make sure that you have tried all the available screen sizes and resolutions. If you have not tested them, then you should either test them and have a detailed report or revert to the previous settings.

[dpgiakatos]

If adding the new loading component breaks the page, then you should adjust the loading component, not the page itself.

[abansal15]

@dpgiakatos when i revert the above style then also its working fine and no page break is there then should i revert these changes ?

[dpgiakatos]

Please address my inline comments. Thank you.

[dpgiakatos]

Revert the changes here

[dpgiakatos]

Revert the changes here

[abansal15]

Hello @dpgiakatos i have done the changes as per instructed please review it ..

[dpgiakatos]

Thanks.