IDEA-242810 Add colon to completion after "case" keyword

GitOrigin-RevId: 3b908b2eed06b41e08ef1c739d90a299389db8c9

java/java-tests/testData/codeInsight/completion/normal/CaseColonAfterStringConstant.java

@@ -0,0 +1,8 @@
+class Main {
+  public static final String STRING_CONSTANT = "abc";
+  public static void main(String[] args) {
+    switch (args[0]) {
+      case STRC<caret>
+    }
+  }
+}

java/java-tests/testData/codeInsight/completion/normal/CaseColonAfterStringConstant_after.java

@@ -0,0 +1,8 @@
+class Main {
+  public static final String STRING_CONSTANT = "abc";
+  public static void main(String[] args) {
+    switch (args[0]) {
+        case STRING_CONSTANT:<caret>
+    }
+  }
+}

java/java-tests/testData/codeInsight/completion/normal/UnboxedConstantsInCase_after.java

@@ -1,7 +1,7 @@
 public class Demo {
     void foo(Integer i){
         switch(i) {
-            case Types.CHAR<caret>
+            case Types.CHAR:<caret>
         }
     }
 }