[LL FIR] rewrote in-block modifications logic

Now we will invalidate bodies for FIR declarations
immediately after in-block modifications in these declarations
We assume that such in-block modifications can happen
only under write action,
so it should be safe to make changes for FirFile

^KT-59687 Fixed
^KT-59199 Fixed
^KTIJ-26066 Fixed

analysis/low-level-api-fir/testdata/inBlockModification/extensionWithDefaultParameters.kt

@@ -0,0 +1,7 @@
+class MyProducer {
+    fun produce(): Int = 4
+}
+
+fun MyProducer.test<caret>Fun(param1: Int = produce()) {
+
+}