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)

internal/query/security_policy.go

@@ -67,7 +67,7 @@ func (q *Queries) SecurityPolicy(ctx context.Context) (policy *SecurityPolicy, e
 		SecurityPolicyColumnInstanceID.identifier(): authz.GetInstance(ctx).InstanceID(),
 	}).ToSql()
 	if err != nil {
-		return nil, zerrors.ThrowInternal(err, "QUERY-Sf6d1", "Errors.Query.SQLStatment")
+		return nil, zerrors.ThrowInternal(err, "QUERY-Sf6d1", "Errors.Query.SQLStatement")
 	}
 
 	err = q.client.QueryRowContext(ctx, func(row *sql.Row) error {