chore: explorer now uses `api/v1/topics/{topicId}` for all networks

[ericleponner]

Description:

Changes below are a follow-up of #1087 and #1136. They 1) remove compatibility code from TopicDetails vue and SearchRequest class 2) re-activate "should flag deleted topic" test in TopicDetails unit tests 3) add missing TopicIdCache.instance.clear() in CacheUtils.clearAll() 4) remove some unneeded call from TopicIdCache.load()

Checklist

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

[github-actions[bot]]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	83.05%	40130 / 48315
🔵	Statements	83.05%	40130 / 48315
🔵	Functions	62.7%	901 / 1437
🔵	Branches	84.08%	4183 / 4975

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/components/SearchBar.vue	53.52%	50%	14.28%	53.52%	28-40, 47, 59-60, 104-105, 107-120, 123-200, 203, 213
src/pages/TopicDetails.vue	100%	92.45%	100%	100%
src/utils/SearchRequest.ts	87.46%	79.72%	92.3%	87.46%	125-130, 142-143, 164-167, 196-198, 204-205, 227-228, 308-311, 342-345, 347-354, 359-360, 365-374
src/utils/cache/CacheUtils.ts	100%	100%	100%	100%
src/utils/cache/TopicByIdCache.ts	87.93%	75%	66.66%	87.93%	34-38, 53-54

Generated in workflow #1028

[sonarcloud[bot]]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud