fix(bqjdbc): fix Long to java.sql.Time coercion #20509

Job	Run time
enforcer	20m 55s
lint	4m 52s
changes	1m 8s
windows	3m 50s
generation-config-check	1m 53s
gapic-libraries-bom	18m 45s
bulk-filter	1m 11s
split-clirr (java-bigquery)	5m 37s
split-units (java-bigquery, 25)	6m 57s
split-units (java-bigquery, 11)	5m 0s
split-dependencies (java-bigquery)	4m 29s
split-units (java-bigquery, 17)	5m 30s
split-units (java-bigquery, 8)	5m 0s
split-units (java-bigquery, 21)	4m 46s
units (8)	1m 8s
units (25)	1m 12s
units (21)	1m 4s
units (17)	39s
units (11)	2m 45s
conditional-required-check	2s
	1h 36m 43s

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