test(eth-rpc-backend): Remove mocked calls in favor of real transactions and blocks

[Unique-Divine]

This will make it easier to update the EVMIndexer and RPC APIs without causing breaking production

• Restore account_info_test.go with testnetwork test(evm): backend tests using real transactions #2042
• Restore backend_suite_test.go with testnetwork - already covered
• Restore blocks_test.go with testnetwork test(evm): backend tests using real transactions #2042
• Restore call_tx_test.go with testnetwork test(evm): backend tests using real transactions #2042
• Restore chain_info_test.go with testnetwork test(evm): backend tests using real transactions #2042
• Restore evm_query_client_test.go with testnetwork test(evm): backend tests using real transactions #2042
• Restore filters_test.go with testnetwork test(evm): backend tests using real transactions #2042
• Restore node_info_test.go with testnetwork test(evm): backend tests using real transactions #2042
• Restore sign_tx_test.go with testnetwork (test(evm): backend tests using real transactions #2042 removed sign_tx api entirely as deprecated and unused)
• Restore tracing_test.go with testnetwork (@onikonychev test(evm): eth rpc backend test coverage #2038 )
• Restore tx_info_test.go with testnetwork (@onikonychev test(evm): eth rpc backend test coverage #2038 )
• Restore utils_test.go with testnetwork (test(evm): backend tests using real transactions #2042 there is a todo waiting for Log events properly implmented)

[Unique-Divine]

• Implementation completed by test(evm): backend tests with test network and real txs #2045