fix(core): `Dropdown` fix initial width #10709

Job	Run time
Build demo	4m 7s
Cypress / Component Testing	4m 11s
Playwright / ubuntu-latest / 1 of 9	5m 16s
Playwright / ubuntu-latest / 2 of 9	5m 27s
Playwright / ubuntu-latest / 3 of 9	12m 45s
Playwright / ubuntu-latest / 4 of 9	5m 1s
Playwright / ubuntu-latest / 5 of 9	6m 7s
Playwright / ubuntu-latest / 6 of 9	5m 24s
Playwright / ubuntu-latest / 7 of 9	5m 57s
Playwright / ubuntu-latest / 8 of 9	4m 56s
Playwright / ubuntu-latest / 9 of 9	5m 14s
E2E result	1m 29s
Playwright E2E Tests matrix result	1s
	1h 5m 55s

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