Fixed the whiteline removal for the schemaLocations when already properly migrated (#855)

Author: Jenson3210

src/main/resources/META-INF/rewrite/jakarta-faces-3.yml

@@ -170,15 +170,19 @@ recipeList:
   - org.openrewrite.xml.ChangeTagAttribute:
       attributeName: version
       elementName: web-app
+      oldValue: ^[1234]\.\d+$
       newValue: 5.0
+      regex: true
   - org.openrewrite.xml.ChangeTagAttribute:
       attributeName: xmlns
       elementName: web-app
       newValue: https://jakarta.ee/xml/ns/jakartaee
   - org.openrewrite.xml.ChangeTagAttribute:
       attributeName: xsi:schemaLocation
       elementName: web-app
+      oldValue: .*xml/ns/javaee.*
       newValue: https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd
+      regex: true
   - org.openrewrite.text.FindAndReplace:
       find: "javax."
       replace: "jakarta."

src/main/resources/META-INF/rewrite/jakarta-faces-4.yml

@@ -193,11 +193,15 @@ recipeList:
   - org.openrewrite.xml.ChangeTagAttribute:
       attributeName: version
       elementName: web-app
+      oldValue: ^[12345]\.\d+$
       newValue: 6.0
+      regex: true
   - org.openrewrite.xml.ChangeTagAttribute:
       attributeName: xsi:schemaLocation
       elementName: web-app
-      newValue: https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd
+      oldValue: (?s)(?<prefix>.*https://jakarta\.ee/xml/ns/jakartaee/web-app_)5_\d+(?<suffix>\.xsd.*)
+      newValue: ${prefix}6_0${suffix}
+      regex: true
 ---
 type: specs.openrewrite.org/v1beta/recipe
 name: org.openrewrite.java.migrate.jakarta.FacesManagedBeansRemoved

src/test/java/org/openrewrite/java/migrate/jakarta/JavaxWebXmlToJakartaWebXmlTest.java

@@ -161,5 +161,25 @@ void fileNotWebXml() {
               )
             );
         }
+
+        @Test
+        void alreadyMigrated() {
+            rewriteRun(
+              //language=xml
+              xml(
+                """
+                  <?xml version="1.0" encoding="UTF-8"?>
+                  <web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
+                           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                           xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee
+                            https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
+                           version="5.0">
+                      <display-name>Unit testing</display-name>
+                  </web-fragment>
+                  """,
+                sourceSpecs -> sourceSpecs.path("web.xml")
+              )
+            );
+        }
     }
 }