Refactor flat-table and flat-table-row to RTL FE-6592 #15432

Job	Run time
Lint	2m 14s
Test with Node 18 (1, 4)	3m 2s
Test with Node 18 (2, 4)	1m 57s
Test with Node 18 (3, 4)	2m 33s
Test with Node 18 (4, 4)	1m 36s
Test with Node 20 (1, 4)	2m 27s
Test with Node 20 (2, 4)	1m 52s
Test with Node 20 (3, 4)	2m 18s
Test with Node 20 (4, 4)	1m 27s
Get global coverage thresholds	3s
Check global coverage with Node 18	34s
Check global coverage with Node 20	38s
	20m 41s

Provide feedback