fix(bigquery): retry getTable server errors #21594

Job	Run time
bulk-filter	1m 14s
units (25)	34s
gapic-libraries-bom	19m 56s
lint	3m 20s
enforcer	19m 7s
units (11)	31s
units (21)	32s
windows	2m 12s
changes	32s
units (8)	52s
generation-config-check	1m 8s
units (17)	32s
split-clirr (java-bigquery)	3m 13s
split-units (java-bigquery, 25)	3m 55s
split-units (java-bigquery, 8)	3m 48s
split-units (java-bigquery, 17)	2m 59s
split-units (java-bigquery, 21)	3m 51s
split-dependencies (java-bigquery)	2m 44s
split-units (java-bigquery, 11)	3m 36s
conditional-required-check	3s
	1h 14m 39s

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