Support Java constructors in FIR (related to KT-29218)

compiler/testData/loadJava/compiledJava/kotlinSignature/ConstructorWithNewTypeParams.fir.txt

@@ -1,2 +1,4 @@
 <T> public open class ConstructorWithNewTypeParams : R|java/lang/Object| {
+    public final function ConstructorWithNewTypeParams(first: R|ft<U, U?>|!): R|test/ConstructorWithNewTypeParams|
+
 }

compiler/testData/loadJava/compiledJava/kotlinSignature/ConstructorWithParentTypeParams.fir.txt

@@ -1,2 +1,4 @@
 <T> public open class ConstructorWithParentTypeParams : R|java/lang/Object| {
+    public final function ConstructorWithParentTypeParams(first: R|ft<T, T?>|!): R|test/ConstructorWithParentTypeParams|
+
 }

compiler/testData/loadJava/compiledJava/kotlinSignature/ConstructorWithSeveralParams.fir.txt

@@ -1,2 +1,4 @@
 public open class ConstructorWithSeveralParams : R|java/lang/Object| {
+    public final function ConstructorWithSeveralParams(integer: R|ft<kotlin/Int, kotlin/Int?>|!, intBasic: R|kotlin/Int|, collection: R|ft<java/util/ArrayList<ft<kotlin/String, kotlin/String?>>, java/util/ArrayList<ft<kotlin/String, kotlin/String?>>?>|!): R|test/ConstructorWithSeveralParams|
+
 }

compiler/testData/loadJava/compiledJava/kotlinSignature/ConstructorWithoutParams.fir.txt

@@ -1,2 +1,4 @@
 public open class ConstructorWithoutParams : R|java/lang/Object| {
+    public final function ConstructorWithoutParams(): R|test/ConstructorWithoutParams|
+
 }