feat(python): Support equality and .child_at in PyVector (#12260) #17415

Job	Run time
Build	33m 1s
Build with Clang	0s
Spark Aggregate Fuzzer	16m 3s
Presto Fuzzer	30m 49s
Spark Fuzzer	15m 44s
Exchange Fuzzer	16m 2s
Join Fuzzer	17m 11s
Presto Bias Fuzzer	0s
RowNumber Fuzzer	15m 33s
Cache Fuzzer	15m 32s
Aggregation Fuzzer with Presto as source of truth	17m 6s
Memory Arbitration Fuzzer	15m 42s
Window Fuzzer with Presto as source of truth	17m 10s
Spark Bias Fuzzer	0s
Signature Changes	2s
Table Evolution Fuzzer	15m 48s
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
Writer Fuzzer with Presto as source of truth	17m 11s
	4h 2m 54s

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