Fix Notification Timestamp Formatting

[Abd-Standard]

Description
Display notification timestamps in a consistent and readable format throughout the dashboard.

Acceptance Criteria
Dates use a consistent format.
Invalid timestamps are handled gracefully.
Timezone handling is verified.

[samuel22x]

@samuel22x has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @samuel22x to this issue.

[Chi-nenye1975]

@Chi-nenye1975 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello Maintainer, I'd love to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Chi-nenye1975 to this issue.

[Yasir-TechGuy]

@Yasir-TechGuy has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Please assign this issue to me

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Yasir-TechGuy to this issue.

[drips-wave]

Congratulations, @francisdouglas-ux! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @francisdouglas-ux: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[Kenisank]

@Kenisank has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer, I would like to solve this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Kenisank to this issue.

[benedictworks-home]

@benedictworks-home has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer, please assign me to this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @benedictworks-home to this issue.

[drips-wave]

Congratulations, @benedictworks-home! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @benedictworks-home: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊