fix(core): use Capacitor safe-area CSS variables on older WebViews #17812

Job	Run time
build-core	1m 13s
test-core-spec	45s
test-core-lint	49s
build-angular	1m 1s
build-vue	39s
build-react	51s
test-core-clean-build	12s
build-angular-server	36s
test-core-screenshot (1, 20)	7m 57s
test-core-screenshot (4, 20)	8m 36s
test-core-screenshot (7, 20)	3m 19s
test-core-screenshot (6, 20)	7m 40s
test-core-screenshot (13, 20)	5m 15s
test-core-screenshot (10, 20)	4m 1s
test-core-screenshot (3, 20)	6m 22s
test-core-screenshot (5, 20)	7m 27s
test-core-screenshot (8, 20)	4m 12s
test-core-screenshot (14, 20)	5m 59s
test-core-screenshot (2, 20)	8m 42s
test-core-screenshot (15, 20)	8m 17s
test-core-screenshot (16, 20)	6m 37s
test-core-screenshot (11, 20)	4m 40s
test-core-screenshot (17, 20)	7m 54s
test-core-screenshot (20, 20)	4m 37s
test-core-screenshot (12, 20)	4m 23s
test-core-screenshot (19, 20)	5m 52s
test-core-screenshot (18, 20)	8m 17s
test-core-screenshot (9, 20)	4m 30s
build-vue-router	39s
build-react-router	27s
test-angular-e2e (ng17)	3m 31s
test-angular-e2e (ng18)	3m 34s
test-angular-e2e (ng19)	3m 42s
test-angular-e2e (ng20)	3m 37s
test-angular-e2e (ng16)	3m 56s
test-vue-e2e (vue3)	3m 20s
test-react-router-e2e (reactrouter5)	2m 56s
test-react-e2e (react19)	2m 52s
test-react-e2e (react18)	2m 51s
test-react-e2e (react17)	2m 54s
verify-test-react-e2e	2s
verify-test-react-router-e2e	2s
verify-test-vue-e2e	3s
verify-test-angular-e2e	2s
verify-screenshots	3s
	2h 45m 14s

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