Revert "Upgrade to Jakarta WS RS 4.0.0"

This reverts commit ed3a5eefe7
and adds a prohibit upgrade rule.

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -842,7 +842,11 @@ bom {
 				.formatted(version.major(), version.minor()), "jakarta.websocket")
 		}
 	}
-	library("Jakarta WS RS", "4.0.0") {
+	library("Jakarta WS RS", "3.1.0") {
+		prohibit {
+			versionRange "[4.0.0,4.1.0]"
+			because "it's part of Jakarta EE 11"
+		}
 		group("jakarta.ws.rs") {
 			modules = [
 				"jakarta.ws.rs-api"