Test for "Code folding doesn't work in kotlin lambdas after some declatation" (KT-14411)

Fixed in previous commit

 #KT-14411 Fixed

idea/testData/folding/checkCollapse/customRegionsNotFullBlock.kt

@@ -0,0 +1,21 @@
+val action2 = <fold text='{...}' expand='true'>{
+    <fold text='start' expand='true'>//<editor-fold desc="start">
+    foo()
+    //</editor-fold"></fold>
+
+    foo()
+
+    <fold text='middle' expand='true'>//<editor-fold desc="middle">
+    foo()
+    //</editor-fold"></fold>
+
+    foo()
+
+    // At the end
+    <fold text='end' expand='true'>//<editor-fold desc="end">
+    foo()
+    //</editor-fold"></fold>
+}</fold>
+
+fun foo() {}
+