[FIR] Update parser test data

compiler/testData/psi/propertyBackingField/explicitBackingField.kt

@@ -0,0 +1,29 @@
+val simpleNumber: Number
+    field = 4
+
+val numberWithPrivateField: Number
+    private field = 4
+
+val numberWithLateinitField: Number
+    lateinit field: Int
+
+val numberWithInternalLateinitField: Number
+    internal lateinit field: Int
+
+var numberWithFieldAndAccessors: Number
+    field = "test"
+    get() = field.length
+    set(value) {
+        field = value.toString()
+    }
+
+val numberWithExplicitType: Number
+    field: Int = 10
+
+val numberWithBlockInitializer: Number
+    field {
+        return 10
+    }
+
+val minimalNumber
+    field