fix(core): use Capacitor safe-area CSS variables on older WebViews #17760

Job	Run time
build-core	1m 5s
test-core-spec	46s
build-vue	34s
build-angular	1m 0s
build-react	45s
test-core-clean-build	11s
build-angular-server	40s
test-core-lint	45s
test-core-screenshot (11, 20)	4m 48s
test-core-screenshot (13, 20)	5m 10s
test-core-screenshot (10, 20)	3m 59s
test-core-screenshot (6, 20)	7m 36s
test-core-screenshot (9, 20)	4m 11s
test-core-screenshot (7, 20)	3m 14s
test-core-screenshot (1, 20)	7m 37s
test-core-screenshot (19, 20)	5m 56s
test-core-screenshot (14, 20)	5m 54s
test-core-screenshot (20, 20)	4m 28s
test-core-screenshot (12, 20)	4m 8s
test-core-screenshot (8, 20)	4m 8s
test-core-screenshot (16, 20)	6m 6s
test-core-screenshot (15, 20)	7m 48s
test-core-screenshot (4, 20)	7m 50s
test-core-screenshot (2, 20)	8m 35s
test-core-screenshot (5, 20)	7m 50s
test-core-screenshot (3, 20)	7m 9s
test-core-screenshot (18, 20)	7m 35s
test-core-screenshot (17, 20)	7m 55s
build-vue-router	44s
build-react-router	23s
test-angular-e2e (ng17)	3m 41s
test-angular-e2e (ng18)	3m 33s
test-angular-e2e (ng16)	3m 50s
test-angular-e2e (ng19)	3m 39s
test-angular-e2e (ng20)	3m 36s
test-react-router-e2e (reactrouter5)	2m 54s
test-react-e2e (react17)	3m 1s
test-react-e2e (react19)	2m 50s
test-react-e2e (react18)	3m 16s
test-vue-e2e (vue3)	3m 19s
verify-test-react-router-e2e	3s
verify-test-react-e2e	2s
verify-test-vue-e2e	4s
verify-test-angular-e2e	4s
verify-screenshots	3s
	2h 42m 45s

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