SPV: Filter requests timing out and retrying causing slow filter sync

[pauldelucia]

Stuff like this

2025-11-27T08:56:26.320575Z ERROR dash_spv::sync::filters::retry: ❌ Filter range 1185001-1185100 failed after 3 retries, giving up
2025-11-27T08:56:26.320940Z  INFO dash_spv::sync::filters::retry: 🔄 Retrying timed out filter range 1186501-1186600 (attempt 3/3)
2025-11-27T08:56:26.321039Z  INFO dash_spv::sync::filters::retry: 🔄 Retrying timed out filter range 1188201-1188300 (attempt 3/3)
2025-11-27T08:56:26.321099Z  INFO dash_spv::sync::filters::retry: 🔄 Retrying timed out filter range 1187301-1187400 (attempt 3/3)
2025-11-27T08:56:26.321155Z  INFO dash_spv::sync::filters::retry: 🔄 Retrying timed out filter range 1189801-1189900 (attempt 3/3)

[xdustinface]

Related code has been rewritten in #411