Keep an input in the old shape in the switch expression golden

The upstream commit rewrote the input of test1 into the new shape, so
both inputs of the golden that declare a variable with a switch
expression already started from the target form, and the golden
checked re-indentation and stability only. Nothing started from "=", a
line break and the switch, which is what the change moves.

test1's input goes back to that shape, as it was before; its expected
output does not change. A field initialized with a switch expression,
written in the same old shape, is added as well, since no golden
covered a field.

Author: abashev

open-java-format/src/test/resources/com/palantir/javaformat/java/testdata/ExpressionSwitch.input

@@ -23,6 +23,13 @@ class ExpressionSwitch {
     return val;
   }
 
+  static final int FIELD =
+          switch (KIND) {
+              case 0 -> 1;
+              case 1 -> 2;
+              default -> throw new IllegalStateException();
+          };
+
   int wrapping(Wrapping w) {
     switch (w) {
         case THIS_IS_A_VERY_LONG_ENUM_VALUE_ONE,
@@ -43,11 +50,12 @@ class ExpressionSwitch {
   }
 
   public void test1(int y) {
-      int x = switch (y) {
-          case 1 -> 1;
-          case 2 -> throw new IllegalArgumentException();
-          default -> throw new IllegalStateException();
-      };
+      int x =
+              switch (y) {
+                  case 1 -> 1;
+                  case 2 -> throw new IllegalArgumentException();
+                  default -> throw new IllegalStateException();
+              };
   }
 
   public void test2(int y) {

open-java-format/src/test/resources/com/palantir/javaformat/java/testdata/ExpressionSwitch.output

@@ -28,6 +28,12 @@ class ExpressionSwitch {
         return val;
     }
 
+    static final int FIELD = switch (KIND) {
+        case 0 -> 1;
+        case 1 -> 2;
+        default -> throw new IllegalStateException();
+    };
+
     int wrapping(Wrapping w) {
         switch (w) {
             case THIS_IS_A_VERY_LONG_ENUM_VALUE_ONE,