fix(nimbus): make home page cards equal height

[yadneshx17]

Because

• The Nimbus home page cards render with inconsistent heights when their content differs, leads to visible gaps and misaligned layout.

This commit

• updates the home page card row to use align-items-stretch
• converts card containers to a flex-based column layout
• removes the fixed minimum height and relies on flexible sizing
• ensures empty and populated card states align consistently

Fixes #14029

[yashikakhurana]

@yadneshx17 Thank you for working on this, can you run command make code_format command to format the files correctly

[yadneshx17]

I ran make code_format as requested. It fails locally due to ESLint not finding the "react-app" config in the "@experimenter/results" workspace.
I also ranyarn workspace @experimenter/nimbus_ui format inside the dev container, all files were unchanged.

[yashikakhurana]

I ran make code_format as requested. It fails locally due to ESLint not finding the "react-app" config in the "@experimenter/results" workspace. I also ranyarn workspace @experimenter/nimbus_ui format inside the dev container, all files were unchanged.

I know one quick work around, okay can you temporarily remove "react-app" in experimenter/results->package.json line, then run make code_format and then add the react app back again

[yadneshx17]

Tried that approach and reran make code_format. Formatting completed successfully and the changes are pushed.

[yashikakhurana]

oh you have some unrelated files in the changes 👀

[yadneshx17]

I have removed the unrelated changes and updated the PR.

[yashikakhurana]

Thank you @yadneshx17 overall looks good, one thing I noticed that the space is between the pagination, can you add padding at the top of the paginations

[yadneshx17]

Added top padding above pagination, let me know if this looks better.

[yashikakhurana]

Thank you @yadneshx17 we are blocking on all the merges now, but will be back on 5th january, team is away for Christmas break 🎄