Sending semtype changes to master #8789

Job	Run time
Build Ballerina Lang	7m 18s
Build Ballerina Distribution	2h 0m 15s
Build Stdlib Level (2)	12m 41s
Build Stdlib Level (1)	4m 35s
Build Stdlib Level (3)	9m 35s
Build Stdlib Level (4)	16m 41s
Build Stdlib Level (5)	43m 24s
Build Stdlib Level (6)	24m 59s
Build Stdlib Level (7)	11m 50s
Build Stdlib Level (8)	43m 11s
Build Stdlib Level (9)	4m 49s
	4h 59m 18s

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