Fix Storage MySQL e2e: update expected searchableLogsTags with ai_route_type

Author: wu-sheng

test/e2e-v2/cases/storage/expected/config-dump.yml

@@ -161,7 +161,7 @@ receiver-sharing-server.default.gRPCSslTrustedCAsPath=
 aws-firehose.default.firehoseAccessKey=******
 core.default.autocompleteTagValuesQueryMaxSize=100
 agent-analyzer.default.noUpstreamRealAddressAgents=6000,9000
-core.default.searchableLogsTags=level,http.status_code
+core.default.searchableLogsTags=level,http.status_code,ai_route_type
 core.default.role=Mixed
 receiver-sharing-server.default.gRPCSslKeyPath=
 receiver-pprof.provider=default