Add phpcs:ignores for wpcom (#41308)

Wpcom has a linting check that flags every use of the `switch_blog`
hook, apparently with the intention that any "valid" uses ignore the
sniff. So let's do that so as to not block any deploys that happen to
touch near these lines (as is currently happening).

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/12953109988

Upstream-Ref: Automattic/jetpack@4daa973

composer.json

@@ -8,7 +8,7 @@
 		"automattic/jetpack-admin-ui": "^0.5.1",
 		"automattic/jetpack-assets": "^4.0.3",
 		"automattic/jetpack-boost-speed-score": "^0.4.1",
-		"automattic/jetpack-connection": "^6.3.0",
+		"automattic/jetpack-connection": "^6.3.1-alpha",
 		"automattic/jetpack-explat": "^0.2.4",
 		"automattic/jetpack-jitm": "^4.0.4",
 		"automattic/jetpack-licensing": "^3.0.3",