Connection: compare WordPress.com and site emails case-insensitively (#51285)

Co-authored-by: Cursor <cursoragent@cursor.com>

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/31809700565

Upstream-Ref: Automattic/jetpack@68ccdda

Author: bindlegirl

composer.json

@@ -6,7 +6,7 @@
 	"require": {
 		"php": ">=7.2",
 		"automattic/jetpack-assets": "^4.4.10",
-		"automattic/jetpack-connection": "^8.10.2",
+		"automattic/jetpack-connection": "^8.10.3-alpha",
 		"automattic/jetpack-constants": "^3.0.12",
 		"automattic/jetpack-external-connections": "^0.1.39",
 		"automattic/jetpack-status": "^6.3.1"