Improved diagnostic rendering #8414

Job	Run time
Build Ballerina Lang	7m 45s
Build Ballerina Distribution	44m 4s
Build Stdlib Level (1)	5m 34s
Build Stdlib Level (2)	12m 57s
Build Stdlib Level (3)	6m 56s
Build Stdlib Level (4)	14m 52s
Build Stdlib Level (6)	17m 48s
Build Stdlib Level (5)	38m 35s
Build Stdlib Level (7)	27m 18s
Build Stdlib Level (8)	35m 19s
Build Stdlib Level (9)	4m 9s
	3h 35m 17s

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