ADM-955: [frontend] change page loading status representation

[Mandy-Tang]

Summary

1. change data structure: loading status instead of error
2. use isLoading is true to represent loading status
3. use isLoaded and isLoadedWithError to represent loading error

...

Before

Description

Screenshots
If applicable, add screenshots to help explain behavior of your code.

After

Description

Screenshots
If applicable, add screenshots to help explain behavior of your code.

Note

Null

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00%	✅ 100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (930ad4a)	7750	7750	100.00%
Head commit (1176e81)	15504 (+7754)	15504 (+7754)	100.00% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1478)	37	37	100.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

See your quality gate settings    Change summary preferences

_{Codacy will stop sending the deprecated coverage status from June 5th, 2024. Learn more}

[github-actions]

Hi @Mandy-Tang! 👋
Thank you for submitting a pull request! We appreciate your contribution and will review your changes as soon as possible.

[sonarqubecloud]

Quality Gate passed for 'heartbeat-backend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[sonarqubecloud]

Quality Gate passed for 'au-heartbeat-heartbeat-frontend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud