Split Linkifier2 (always active) into Linkifier (after attach) and LinkProviderService (always active) #491

Job	Run time
test-unit-parallel (18, ubuntu)	1m 25s
test-unit-parallel (18, macos)	1m 39s
build	1m 0s
test-unit-parallel (18, windows)	7m 6s
lint	1m 0s
test-api-parallel (18, ubuntu, chromium)	2m 25s
test-api-parallel (18, ubuntu, firefox)	2m 44s
test-playwright-parallel (18, ubuntu, chromium)	1m 53s
test-playwright-parallel (18, ubuntu, firefox)	1m 43s
test-playwright-parallel (18, ubuntu, webkit)	1m 48s
test-unit-coverage	1m 1s
test-api (18, windows, chromium)	5m 17s
test-api (18, windows, firefox)	5m 16s
release-dry-run (18)	1m 47s
test-unit (16, ubuntu)	47s
test-unit (16, macos)	37s
test-unit (16, windows)	45s
	38m 13s

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