Fix callable code factory (parameter with default value case)

Before we can have end of '<Type>' and '=' joined as '>=' breaking PSI
So #KT-15941 Fixed

compiler/frontend/src/org/jetbrains/kotlin/psi/KtPsiFactory.kt

@@ -691,7 +691,7 @@ class KtPsiFactory @JvmOverloads constructor(private val project: Project, val m
             }
             sb.append(name).append(": ").append(type)
             if (defaultValue != null) {
-                sb.append("= ").append(defaultValue)
+                sb.append(" = ").append(defaultValue)
             }
             if (state == State.FIRST_PARAM) {
                 state = State.REST_PARAMS

idea/testData/intentions/convertPrimaryConstructorToSecondary/genericParamWithDefaultValue.kt

@@ -0,0 +1 @@
+class Test<caret>(val a: Array<Int> = arrayOf(0))

idea/testData/intentions/convertPrimaryConstructorToSecondary/genericParamWithDefaultValue.kt.after

@@ -0,0 +1,7 @@
+class Test {
+    val a: Array<Int>
+
+    constructor(a: Array<Int> = arrayOf(0)) {
+        this.a = a
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/intentions/IntentionTestGenerated.java

@@ -5624,6 +5624,12 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
             doTest(fileName);
         }
 
+        @TestMetadata("genericParamWithDefaultValue.kt")
+        public void testGenericParamWithDefaultValue() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/convertPrimaryConstructorToSecondary/genericParamWithDefaultValue.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("independentProperty.kt")
         public void testIndependentProperty() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/convertPrimaryConstructorToSecondary/independentProperty.kt");