fix(frontend): use <time> for timestamps

[sidvishnoi]

Changes proposed in this pull request

Use <time> for timestamps. Visually same behavior, but semantically better. Show a long-form timestamp in title attribute (good affordance but default local one isn't clear always).
Can in future be extended to how dashboards like Stripe show timestamps (in local time, in UTC, in machine readable format etc.) on hover.

Context

Follow up of #3961

Checklist

• Related issues linked using fixes #number
• Tests added/updated
• Make sure that all checks pass
• Bruno collection updated (if necessary)
• Documentation issue created with user-docs label (if necessary)
• OpenAPI specs updated (if necessary)

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[github-actions]

🚀 Performance Test Results

Test Configuration:

• VUs: 4
• Duration: 1m0s

Test Metrics:

• Requests/s: 42.29
• Iterations/s: 14.11
• Failed Requests: 0.00% (0 of 2544)

📜 Logs

> performance@1.0.0 run-tests:testenv /home/runner/work/rafiki/rafiki/test/performance
> ./scripts/run-tests.sh -e test -k -q --vus 4 --duration 1m

Cloud Nine GraphQL API is up: http://localhost:3101/graphql
Cloud Nine Wallet Address is up: http://localhost:3100/
Happy Life Bank Address is up: http://localhost:4100/
cloud-nine-wallet-test-backend already set
cloud-nine-wallet-test-auth already set
happy-life-bank-test-backend already set
happy-life-bank-test-auth already set
     data_received..................: 918 kB 15 kB/s
     data_sent......................: 2.0 MB 33 kB/s
     http_req_blocked...............: avg=8.18µs   min=1.81µs   med=5.79µs   max=1.36ms   p(90)=7.12µs   p(95)=7.91µs  
     http_req_connecting............: avg=728ns    min=0s       med=0s       max=1.31ms   p(90)=0s       p(95)=0s      
     http_req_duration..............: avg=93.93ms  min=7.29ms   med=75.4ms   max=522.19ms p(90)=163.86ms p(95)=187.84ms
       { expected_response:true }...: avg=93.93ms  min=7.29ms   med=75.4ms   max=522.19ms p(90)=163.86ms p(95)=187.84ms
     http_req_failed................: 0.00%  ✓ 0         ✗ 2544
     http_req_receiving.............: avg=102.37µs min=26.12µs  med=88.85µs  max=2.55ms   p(90)=132.03µs p(95)=182.3µs 
     http_req_sending...............: avg=35.27µs  min=8.6µs    med=26.54µs  max=930.11µs p(90)=41.16µs  p(95)=59.7µs  
     http_req_tls_handshaking.......: avg=0s       min=0s       med=0s       max=0s       p(90)=0s       p(95)=0s      
     http_req_waiting...............: avg=93.79ms  min=7.09ms   med=75.27ms  max=522.08ms p(90)=163.71ms p(95)=187.71ms
     http_reqs......................: 2544   42.286676/s
     iteration_duration.............: avg=283.13ms min=203.73ms med=270.04ms max=975.16ms p(90)=347.02ms p(95)=376.93ms
     iterations.....................: 849    14.112181/s
     vus............................: 4      min=4       max=4 
     vus_max........................: 4      min=4       max=4