FIR mangler: handle situation with invisible type in f/o signature

Before this commit, FIR mangler effectively dropped f/o parameter with
invisible type from this module. It could lead to signature clashes.
Now we insert classId in mangler string instead.
This fixes FIR bootstrap.

compiler/testData/codegen/box/fir/SamWithReceiverMavenProjectImportHandler.kt

@@ -0,0 +1,36 @@
+// TARGET_BACKEND: JVM_IR
+// WITH_RUNTIME
+
+// MODULE: maven
+// FILE: MavenProject.kt
+
+interface MavenProject
+
+// MODULE: lib(maven)
+// FILE: lib.kt
+
+abstract class AbstractMavenImportHandler {
+    abstract fun getOptions(enabledCompilerPlugins: List<String>, compilerPluginOptions: List<String>): List<String>?
+
+    protected open fun getOptions(
+        mavenProject: MavenProject,
+        enabledCompilerPlugins: List<String>,
+        compilerPluginOptions: List<String>
+    ): List<String>? = getOptions(enabledCompilerPlugins, compilerPluginOptions)
+}
+
+// MODULE: main(lib)
+// FILE: sam.kt
+
+class SamWithReceiverMavenProjectImportHandler : AbstractMavenImportHandler() {
+    override fun getOptions(enabledCompilerPlugins: List<String>, compilerPluginOptions: List<String>): List<String>? {
+        return null
+    }
+}
+
+// FILE: main.kt
+
+fun box(): String {
+    val result = SamWithReceiverMavenProjectImportHandler()
+    return result.getOptions(emptyList(), emptyList())?.get(0) ?: "OK"
+}