tables lost when joins exists in from clause

[chein-huang]

in file: callbacks/query.go

97		joins := []clause.Join{}
98		if fromClause, ok := db.Statement.Clauses["FROM"].Expression.(clause.From); ok {
99			joins = fromClause.Joins
100		}
101
102		if len(db.Statement.Joins) != 0 || len(joins) != 0 {
...
189			db.Statement.AddClause(clause.From{Joins: joins})
190			db.Statement.Joins = nil
191		} else {
...

[github-actions]

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[jinzhu]

thank you for your pr #5218