feat(fuzzer): Support multiple joins in the join node "toSql" methods for reference query runners #15284

Job	Run time
Build	48m 58s
Build with Clang	0s
Spark Aggregate Fuzzer	15m 45s
Presto Fuzzer	31m 1s
Presto Bias Fuzzer	0s
Join Fuzzer	17m 32s
Spark Bias Fuzzer	0s
Exchange Fuzzer	16m 18s
RowNumber Fuzzer	15m 34s
Spark Fuzzer	15m 46s
Biased Aggregation Fuzzer with Presto as source of truth	0s
Biased Expression Fuzzer with Only Added/Updated Functions and Presto as source of truth	0s
Aggregation Fuzzer with Presto as source of truth	19m 36s
Window Fuzzer with Presto as source of truth	17m 35s
Writer Fuzzer with Presto as source of truth	17m 24s
Signature Changes	2s
	3h 35m 31s

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