perf(query): reduce user query duration (#10037)

# Which Problems Are Solved

The resource usage to query user(s) on the database was high and
therefore could have performance impact.

# How the Problems Are Solved

Database queries involving the users and loginnames table were improved
and an index was added for user by email query.

# Additional Changes

- spellchecks
- updated apis on load tests

# additional info

needs cherry pick to v3

(cherry picked from commit 4df138286b)

cmd/setup/setup.go

@@ -215,6 +215,7 @@ func Setup(ctx context.Context, config *Config, steps *Steps, masterKey string)
 	steps.s54InstancePositionIndex = &InstancePositionIndex{dbClient: dbClient}
 	steps.s55ExecutionHandlerStart = &ExecutionHandlerStart{dbClient: dbClient}
 	steps.s56IDPTemplate6SAMLFederatedLogout = &IDPTemplate6SAMLFederatedLogout{dbClient: dbClient}
+	steps.s58ReplaceLoginNames3View = &ReplaceLoginNames3View{dbClient: dbClient}
 
 	err = projection.Create(ctx, dbClient, eventstoreClient, config.Projections, nil, nil, nil)
 	logging.OnError(err).Fatal("unable to start projections")
@@ -260,6 +261,7 @@ func Setup(ctx context.Context, config *Config, steps *Steps, masterKey string)
 		steps.s54InstancePositionIndex,
 		steps.s55ExecutionHandlerStart,
 		steps.s56IDPTemplate6SAMLFederatedLogout,
+		steps.s58ReplaceLoginNames3View,
 	} {
 		setupErr = executeMigration(ctx, eventstoreClient, step, "migration failed")
 		if setupErr != nil {