feat: Search Bar now uses api/v1/topics new REST call when previewnet is selected

[ericleponner]

Description:

Changes below alter SearchRequest class so that it uses api/v1/topics/{topicId} when previewnet.
For mainnet and testnet, behavior is unchanged (use of api/v1/topics/{topicId}/messages).
Changes also include unit tests adaptation to this new logic.

Related issue(s):

Fixes #1109

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[sonarcloud]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)
48.1% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	83.05%	40136 / 48324
🔵	Statements	83.05%	40136 / 48324
🔵	Functions	62.76%	902 / 1437
🔵	Branches	84.06%	4190 / 4984

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/components/SearchBar.vue	52.22%	50%	14.28%	52.22%	28-40, 47, 59-60, 104-105, 107-120, 123-206, 209, 219
src/utils/SearchRequest.ts	87.72%	80.26%	92.3%	87.72%	128-133, 145-146, 167-170, 199-201, 207-208, 228-229, 316-319, 350-353, 355-362, 367-368, 373-382

Generated in workflow #1025

[svienot]

Looks good !