Fix formatting of single-line if-else expressions.

The previous change inadvertently introduced an extra space in the formatting of single-line if-else expressions:

    if (condition) aValue else  anotherValue

This fix removes the extraneous space.

formatter/src/main/kotlin/org/kotlin/formatter/scanning/IfExpressionScanner.kt

@@ -119,7 +119,7 @@ internal class IfExpressionScanner(private val kotlinScanner: KotlinScanner) : N
                 }
             } or {
                 oneOrMore { anyNode() } thenMapToTokens { nodes ->
-                    listOf(SynchronizedBreakToken(whitespaceLength = 1))
+                    listOf(SynchronizedBreakToken(whitespaceLength = 0))
                         .plus(kotlinScanner.scanNodes(nodes, ScannerState.STATEMENT))
                 }
             }

formatter/src/test/kotlin/org/kotlin/formatter/KotlinFormatterTest.kt

@@ -1856,6 +1856,15 @@ class KotlinFormatterTest {
             )
     }
 
+    @Test
+    fun `does not break a short if-else block`() {
+        val result =
+            KotlinFormatter(maxLineLength = 100)
+                .format("""if (aCondition) "Some value" else "Some other value"""")
+
+        assertThat(result).isEqualTo("""if (aCondition) "Some value" else "Some other value"""")
+    }
+
     @Test
     fun `does not break a before else if`() {
         val result =