Dont duplicate `CHECK` constraints and `DEFAULT`s when altering colum… #1881

Job	Run time
license check	6s
dead code check	9s
validate examples JSON	9s
examples (pg: 14.8, schema: public)	49s
examples (pg: 14.8, schema: non_public)	49s
lint	19s
examples (pg: 15.3, schema: public)	56s
test (pg: 14.8, schema: public)	47s
type generation	9s
test (pg: 14.8, schema: non_public)	54s
examples (pg: 15.3, schema: non_public)	52s
test (pg: 15.3, schema: public)	49s
examples (pg: 16.0, schema: public)	50s
test (pg: 15.3, schema: non_public)	55s
examples (pg: 16.0, schema: non_public)	47s
test (pg: 16.0, schema: public)	51s
examples (pg: latest, schema: public)	47s
test (pg: 16.0, schema: non_public)	44s
examples (pg: latest, schema: non_public)	51s
test (pg: latest, schema: public)	44s
test (pg: latest, schema: non_public)	48s
release	0s
	14m 5s

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