chore(demo): `TextfieldController` mark as legacy #5185

Job	Run time
Build demo	3m 44s
Build demo	3m 44s
playwright / (1 of 9)	5m 55s
playwright / (1 of 9)	5m 55s
playwright / (2 of 9)	11m 23s
playwright / (2 of 9)	11m 23s
playwright / (3 of 9)	7m 7s
playwright / (3 of 9)	7m 7s
playwright / (4 of 9)	4m 50s
playwright / (4 of 9)	4m 50s
playwright / (5 of 9)	7m 42s
playwright / (5 of 9)	7m 42s
playwright / (6 of 9)	5m 35s
playwright / (6 of 9)	5m 35s
playwright / (7 of 9)	4m 43s
playwright / (7 of 9)	4m 43s
playwright / (8 of 9)	5m 52s
playwright / (8 of 9)	5m 52s
playwright / (9 of 9)	5m 39s
playwright / (9 of 9)	5m 39s
Playwright E2E Tests matrix result	1s
Playwright E2E Tests matrix result	1s
E2E result	18s
E2E result	7s
	2h 5m 27s

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